sparc: select FRAME_POINTER instead of redefining it

Because FRAME_POINTER is defined in lib/Kconfig.debug, the arch Kconfig
should select it.

Add 'select FRAME_POINTER' to MCOUNT. ARCH_WANT_FRAME_POINTERS must
also be selected to avoid the unmet dependency warning.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20240215135749.1909812-1-masahiroy@kernel.org

arch/sparc/Kconfig.debug

@@ -8,11 +8,8 @@ config MCOUNT
 	bool
 	depends on SPARC64
 	depends on FUNCTION_TRACER
-	default y
-
-config FRAME_POINTER
-	bool
-	depends on MCOUNT
+	select ARCH_WANT_FRAME_POINTERS
+	select FRAME_POINTER
 	default y
 
 config HAVE_HARDLOCKUP_DETECTOR_SPARC64