aout: mark arches that support A.OUT format

Mark arches that support A.OUT format by including the following in their
master Kconfig files:

	config ARCH_SUPPORTS_AOUT
		def_bool y

This should also be set if the arch provides compatibility A.OUT support for
an older arch, for instance x86_64 for i386 or sparc64 for sparc.

I've guessed at which arches don't, based on comments in the code, however I'm
sure that some of the ones I've marked as 'yes' actually should be 'no'.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index a8c6366..5023b81 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -81,6 +81,9 @@
 	bool
 	def_bool y
 
+config ARCH_SUPPORTS_AOUT
+	def_bool y
+
 choice
 	prompt "Kernel page size"
 	default SPARC64_PAGE_SIZE_8KB
@@ -390,7 +393,7 @@
 
 config BINFMT_AOUT32
 	bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
-	depends on SPARC32_COMPAT
+	depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT
 	help
 	  This allows you to run 32-bit a.out format binaries on your Ultra.
 	  If you want to run SunOS binaries (see SunOS binary emulation below)