kbuild: cherry-pick kbuild fdtoverlay changes from linux
Linux commits:
15d16d6dadf6 kbuild: Add generic rule to apply fdtoverlay
44f87191d105 kbuild: parameterize the .o part of suffix-search
The Linux commit 15d16d6dadf6 adds a generic rule in Makefile.lib
to automatically apply fdtoverlay, so that each platform doesn't
need to include a complex rule. This also automatically appends
DTC_FLAGS_foo_base += -@ to all base files
The platform's Makefile only needs to have this now:
foo-dtbs := foo_base.dtb foo_overlay1.dtbo foo_overlay2.dtbo
dtb-y := foo.dtb
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20240906070808.1045991-2-prasad.kummari@amd.com
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 99cc295..90aed14 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -293,6 +293,7 @@
targets += $(real-objs-y) $(real-objs-m) $(lib-y)
targets += $(extra-y) $(MAKECMDGOALS) $(always)
+targets += $(real-dtb-y) $(lib-y) $(always-y)
# Linker scripts preprocessor (.lds.S -> .lds)
# ---------------------------------------------------------------------------