graphics/libyuv: refine patching logic

Only stable branch need custom patch, main is fixed by upstream

Signed-off-by: Peter Bee <[email protected]>

graphics/libyuv/Makefile

@@ -30,7 +30,9 @@ libyuv.tar.gz:
 	$(Q) curl -L https://chromium.googlesource.com/libyuv/libyuv/+archive/refs/heads/$(CONFIG_LIBYUV_BRANCH).tar.gz -o libyuv.tar.gz
 	$(Q) mkdir -p $(SRCDIR)
 	$(Q) tar zxf libyuv.tar.gz --directory $(SRCDIR)
+ifeq ($(CONFIG_LIBYUV_BRANCH),"stable")
 	$(Q) patch -p0 < 0001-include-libyuv-fix-strict-prototype-warning.patch
+endif
 
 # Download and unpack tarball if no git repo found
 ifeq ($(wildcard libyuv/.git),)