kbuild: keep the original function for non-RPi

raspberrypi inclusion
category: feature
bugzilla: 50432

------------------------------

This patch adjusts following kbuild related patches for
raspberry pi on non-Raspberry Pi platforms, using specific
config CONFIG_OPENEULER_RASPBERRYPI to distinguish them:

d2864887 Kbuild: Allow .dtbo overlays to be built, adjust.
0131a56e kbuild: Disable gcc plugins
4894352e kbuild: Silence unavoidable dtc overlay warnings
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>

Makefile

@@ -1333,8 +1333,10 @@ ifneq ($(dtstree),)
 %.dtb: include/config/kernel.release scripts_dtc
 	$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
 
+ifdef CONFIG_OPENEULER_RASPBERRYPI
 %.dtbo: include/config/kernel.release scripts_dtc
 	$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+endif
 
 PHONY += dtbs dtbs_install dtbs_check
 dtbs: include/config/kernel.release scripts_dtc

scripts/Makefile.lib

@@ -348,12 +348,14 @@ cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 	$(DTC) -@ -H epapr -O dtb -o $@ -b 0 \
 		-i $(dir $<) $(DTC_FLAGS) \
 		-Wno-interrupts_property \
+ifeq ($(CONFIG_OPENEULER_RASPBERRYPI),y) \
 		-Wno-label_is_string \
 		-Wno-reg_format \
 		-Wno-pci_device_bus_num \
 		-Wno-i2c_bus_reg \
 		-Wno-spi_bus_reg \
 		-Wno-avoid_default_addr_size \
+endif \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 

scripts/gcc-plugin.sh

 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
+if [ -n "${CONFIG_OPENEULER_RASPBERRYPI}" ]; then
 exit 1 # Disable plugins
+fi
 
 set -e