!491 [sync] PR-477: tools: fix compile error introduced by LoongArch commit

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/477 
 
when compile x86_64 using make ARCH=x86_64,error occurred,the reason is
ARCH is a command-line argument.So split loongarch architecture from others. 
 
Link:https://gitee.com/openeuler/kernel/pulls/491 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

scripts/Makefile

@@ -24,20 +24,19 @@ HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS)
 HOSTLDLIBS_extract-cert = $(CRYPTO_LIBS)
 
 ifdef CONFIG_UNWINDER_ORC
-# Additional ARCH settings for x86
+ifneq ($(filter loongarch loongarch64, $(ARCH)),)
+HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/loongarch/include
+HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED
+HOSTLDLIBS_sorttable = -lpthread
+else
 ifeq ($(ARCH),x86_64)
 ARCH := x86
 endif
-
-# Additional ARCH settings for loongarch
-ifeq ($(ARCH),loongarch64)
-ARCH := loongarch
-endif
-
-HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/$(ARCH)/include
+HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/x86/include
 HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED
 HOSTLDLIBS_sorttable = -lpthread
 endif
+endif
 
 # The following programs are only built on demand
 hostprogs += unifdef