gnu: dtc: Update to 1.7.0....Enable the python bindings and switch to the meson build system that handles
the python bindings better than the Makefile build system here.
* gnu/packages/patches/dtc-meson-cell-overflow.patch: New file
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/bootloaders.scm (dtc): Update to 1.7.0.
[build-system]: Switch to the meson-build-system.
[arguments]: Remove #:make-flags. Add a new 'preparations phase. Do not edit
the Makefile in the 'patch-pkg-config phase. Remove the 'configure phase.
Change-Id: Ie61c920829ab3a8c32f4924c694dba6bda807711
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>