Dfu-programmer cannot cannot find libusb. This patch fixes that.

diff --git a/src/dfu-device.h b/src/dfu-device.h
index bbdfa99..31af0e8 100644
--- a/src/dfu-device.h
+++ b/src/dfu-device.h
@@ -6,7 +6,7 @@
 #endif
 #include <stdint.h>
 #ifdef HAVE_LIBUSB_1_0
-#include <libusb.h>
+#include <libusb-1.0/libusb.h>
 #else
 #include <usb.h>
 #endif

diff --git a/src/main.c b/src/main.c
index ef2aa16..dcc3636 100644
--- a/src/main.c
+++ b/src/main.c
@@ -24,7 +24,7 @@
 #include <stdio.h>
 #include <string.h>
 #ifdef HAVE_LIBUSB_1_0
-#include <libusb.h>
+#include <libusb-1.0/libusb.h>
 #else
 #include <usb.h>
 #endif

diff --git a/src/dfu.c b/src/dfu.c
index 7dbcc57..952e896 100644
--- a/src/dfu.c
+++ b/src/dfu.c
@@ -27,7 +27,7 @@
 #include <stdlib.h>
 #include <stddef.h>
 #ifdef HAVE_LIBUSB_1_0
-#include <libusb.h>
+#include <libusb-1.0/libusb.h>
 #else
 #include <usb.h>
 #endif

diff --git a/src/dfu.h b/src/dfu.h
index 2a159e8..63510f2 100644
--- a/src/dfu.h
+++ b/src/dfu.h
@@ -25,7 +25,7 @@
 # include <config.h>
 #endif
 #ifdef HAVE_LIBUSB_1_0
-#include <libusb.h>
+#include <libusb-1.0/libusb.h>
 #else
 #include <usb.h>
 #endif
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<div class='path'>path: <a href='/guix/log/?id=831bb7f33bb62b05bc11a156124726551fd7c6b8'>root</a>/<a href='/guix/log/gnu?id=831bb7f33bb62b05bc11a156124726551fd7c6b8'>gnu</a>/<a href='/guix/log/gnu/machine?id=831bb7f33bb62b05bc11a156124726551fd7c6b8'>machine</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/machine?id=831bb7f33bb62b05bc11a156124726551fd7c6b8&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-11-17 22:27:39 +0100'>2022-11-17</span></td><td><a href='/guix/commit/gnu/machine?id=17b01d546306885ff3c07e7b6aaffb541a8b9043'>machine: ssh: Validate 'system' field.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine/ssh.scm (&lt;machine-ssh-configuration&gt;)[system]: Add
'sanitize' property.
(validate-system-type): New macro.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-11-09 13:45:24 +0100'>2022-11-09</span></td><td><a href='/guix/commit/gnu/machine?id=8d7cb7f2a4d0b7ce49764e4ba24026762d640da7'>machine/digital-ocean: Pull operating system definition out of string.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine/digital-ocean.scm (guix-infect): Define the operating system
declaration as an s-expression and paste it into the generated Bash script to
simplify editing.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-11-09 13:45:24 +0100'>2022-11-09</span></td><td><a href='/guix/commit/gnu/machine?id=ebb88e2bed889b67ea83893c907ab29e3bc81e8b'>machine/digital-ocean: Set load path to Guile 3.0 directories.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine/digital-ocean.scm (guix-infect, add-static-networking): Set
GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH to directories for Guile 3.0
instead of 2.2.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-11-09 13:45:24 +0100'>2022-11-09</span></td><td><a href='/guix/commit/gnu/machine?id=e8dcd008a0be8bd967efabab6960d19e5424d93e'>machine/digital-ocean: Use static-networking-service-type.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine/digital-ocean.scm (ip+netmask-&gt;cidr): New procedure.
(guix-infect, add-static-networking): Use static-networking-service-type
instead of the deprecated static-networking-service.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-11-09 13:45:24 +0100'>2022-11-09</span></td><td><a href='/guix/commit/gnu/machine?id=c8e41af7be47fdd3ae16765d5cf892582f5a407a'>machine/digital-ocean: Use nightly Guix.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine/digital-ocean.scm (guix-infect): Fetch latest Guix build from
ci.guix.gnu.org.
</span></span></td><td>Ricardo Wurmus</td></tr>