Merge tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:

 - always require argument for --defconfig and remove the hard-coded
   arch/$(ARCH)/defconfig path

 - make arch/$(SRCARCH)/configs/defconfig the new default of defconfig

 - some code cleanups

* tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: remove meaningless if-conditional in conf_read()
  kconfig: Fix spelling of sym_is_changable
  unicore32: rename unicore32_defconfig to defconfig
  kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG
  kconfig: add static qualifier to expand_string()
  kconfig: require the argument of --defconfig
  kconfig: remove always false ifeq ($(KBUILD_DEFCONFIG,) conditional

arch/nds32/Makefile

@@ -2,8 +2,6 @@
 LDFLAGS_vmlinux	:= --no-undefined -X
 OBJCOPYFLAGS	:= -O binary -R .note -R .note.gnu.build-id -R .comment -S
 
-KBUILD_DEFCONFIG := defconfig
-
 ifdef CONFIG_FUNCTION_TRACER
 arch-y += -malways-save-lp -mno-relax
 endif