objtool: Add HAVE_NOINSTR_VALIDATION

Remove CONFIG_NOINSTR_VALIDATION's dependency on HAVE_OBJTOOL, since
other arches might want to implement objtool without it.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/488e94f69db4df154499bc098573d90e5db1c826.1650300597.git.jpoimboe@redhat.com

arch/Kconfig

@@ -1038,6 +1038,9 @@ config HAVE_JUMP_LABEL_HACK
 config HAVE_NOINSTR_HACK
 	bool
 
+config HAVE_NOINSTR_VALIDATION
+	bool
+
 config HAVE_STACK_VALIDATION
 	bool
 	help

arch/x86/Kconfig

@@ -233,6 +233,7 @@ config X86
 	select HAVE_MOVE_PUD
 	select HAVE_NOINSTR_HACK		if HAVE_OBJTOOL
 	select HAVE_NMI
+	select HAVE_NOINSTR_VALIDATION		if HAVE_OBJTOOL
 	select HAVE_OBJTOOL			if X86_64
 	select HAVE_OPTPROBES
 	select HAVE_PCSPKR_PLATFORM

lib/Kconfig.debug

@@ -502,7 +502,7 @@ config STACK_VALIDATION
 
 config NOINSTR_VALIDATION
 	bool
-	depends on HAVE_OBJTOOL && DEBUG_ENTRY
+	depends on HAVE_NOINSTR_VALIDATION && DEBUG_ENTRY
 	select OBJTOOL
 	default y