Fix build break for Argument list too long

Reduce the number of files listed in the for loop statement
in function update_lto_symversions to prevent error "Argument
list too long" when building kernel in local workstation.

Bug: 138277477
Test: Build pass
Change-Id: I5218c60e6728f2425f3faa7f795c7782c5f817ad
Signed-off-by: Hsiu-Chang Chen <hsiuchangchen@google.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>

scripts/Makefile.build

@@ -500,11 +500,10 @@ ifdef CONFIG_LTO_CLANG
     # combine symversions for later processing
     update_lto_symversions =				\
 	rm -f $@.symversions; 				\
-	for i in $(filter-out FORCE,$^); do		\
-		if [ -f $$i.symversions ]; then		\
-			cat $$i.symversions 		\
-				>> $@.symversions;	\
-		fi;					\
+	for i in $(foreach n,						\
+			$(filter-out FORCE,$^),				\
+			$(if $(wildcard $(n).symversions),$(n))); do	\
+		cat $$i.symversions >> $@.symversions;			\
 	done;
   endif
   # rebuild the symbol table with llvm-ar to include IR files