kbuild: clean .tmp_* pattern by make clean

Change the "make clean" rule to remove all the .tmp_* files.

.tmp_objdiff is the only exception, which should be removed by
"make mrproper".

Rename the record directory of objdiff, .tmp_objdiff to .objdiff to
avoid the removal by "make clean".

Signed-off-by: Masahiro Yamada <[e-mail]>
Tested-by: Sedat Dilek <[e-mail]> # LLVM-14 (x86-64)

Makefile

···
 
 # Directories & files removed with 'make mrproper'
 MRPROPER_FILES += include/config include/generated          \
-		  arch/$(SRCARCH)/include/generated .tmp_objdiff \
+		  arch/$(SRCARCH)/include/generated .objdiff \
 		  debian snap tar-install \
 		  .config .config.old .version \
 		  Module.symvers \
···
 		-o -name '*.lex.c' -o -name '*.tab.[ch]' \
 		-o -name '*.asn1.[ch]' \
 		-o -name '*.symtypes' -o -name 'modules.order' \
-		-o -name '.tmp_*.o.*' \
+		-o -name '.tmp_*' \
 		-o -name '*.c.[012]*.*' \
 		-o -name '*.ll' \
 		-o -name '*.gcno' \

scripts/link-vmlinux.sh

···
 cleanup()
 {
 	rm -f .btf.*
-	rm -f .tmp_System.map
-	rm -f .tmp_initcalls.lds
-	rm -f .tmp_vmlinux*
 	rm -f System.map
 	rm -f vmlinux
 	rm -f vmlinux.map

scripts/objdiff

···
 # $ ./scripts/objdiff diff COMMIT_A COMMIT_B
 # $
 
-# And to clean up (everything is in .tmp_objdiff/*)
+# And to clean up (everything is in .objdiff/*)
 # $ ./scripts/objdiff clean all
 #
-# Note: 'make mrproper' will also remove .tmp_objdiff
+# Note: 'make mrproper' will also remove .objdiff
 
 SRCTREE=$(cd $(git rev-parse --show-toplevel 2>/dev/null); pwd)
 
···
 	exit 1
 fi
 
-TMPD=$SRCTREE/.tmp_objdiff
+TMPD=$SRCTREE/.objdiff
 
 usage() {
 	echo >&2 "Usage: $0 <command> <args>"