kbuild: Simplify DEBUG_INFO Kconfig handling

While playing with [1] I saw that the handling
of CONFIG_DEBUG_INFO can be simplified.

[1] https://patchwork.kernel.org/patch/11716107/

Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
diff --git a/Makefile b/Makefile
index f211681..4ef6a73 100644
--- a/Makefile
+++ b/Makefile
@@ -816,13 +816,15 @@
 DEBUG_CFLAGS	:= $(call cc-option, -fno-var-tracking-assignments)
 
 ifdef CONFIG_DEBUG_INFO
+
 ifdef CONFIG_DEBUG_INFO_SPLIT
 DEBUG_CFLAGS	+= -gsplit-dwarf
 else
 DEBUG_CFLAGS	+= -g
 endif
+
 KBUILD_AFLAGS	+= -Wa,-gdwarf-2
-endif
+
 ifdef CONFIG_DEBUG_INFO_DWARF4
 DEBUG_CFLAGS	+= -gdwarf-4
 endif
@@ -838,6 +840,8 @@
 KBUILD_LDFLAGS	+= --compress-debug-sections=zlib
 endif
 
+endif # CONFIG_DEBUG_INFO
+
 KBUILD_CFLAGS += $(DEBUG_CFLAGS)
 export DEBUG_CFLAGS