Fix MIPS assembly code to work with newer GCC, where the "=h"
constraint is no longer supported.

--- libmad/fixed.h.orig	2004-02-16 21:02:03.000000000 -0500
+++ libmad/fixed.h	2011-10-29 18:47:21.000000000 -0400
@@ -304,8 +304,8 @@
  * significant bit depends on OPT_ACCURACY via mad_f_scale64().
  */
 #  define MAD_F_MLX(hi, lo, x, y)  \
-    asm ("mult	%2,%3"  \
-	 : "=l" (lo), "=h" (hi)  \
+    asm ("mult	%2,%3\n\tmfhi  %1"  \
+	 : "=l" (lo), "=r" (hi)  \
 	 : "%r" (x), "r" (y))
 
 # if defined(HAVE_MADD_ASM)
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<tr><td><span title='2023-10-03 21:37:18 +0300'>2023-10-03</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=8d47bfb5d646e845135795347b806c0ac1a7c6cf'>gnu: gama: Update to 2.26.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gps.scm (gama): Update to 2.26.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-07-09 10:01:04 +0300'>2023-07-09</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=1bd6b91368b49cc2dde21f62b6e57e65fedea524'>gnu: gpsd: Download using mirror uri.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gps.scm (gpsd)[source]: Rewrite source uri to use
download mirrors.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-03-02 11:48:10 +0200'>2023-03-02</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=4acda21217a623ceb9b262ef456d25298e0b0905'>gnu: gama: Update to 2.24.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gps.scm (gama): Update to 2.24.
</span></span></td><td>Efraim Flashner</td></tr>