sparc: move select of ARCH_SUPPORTS_MSI

It is counter intuitive to have the select listed
as part of the PCI option.
Move the select to the SPARC64 specific part of the config.

PCI_MSI has a dependency on PCI so it does not harm to have
it always selected.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/Kconfig

@@ -31,6 +31,7 @@ config SPARC32
 config SPARC64
 	bool
 	default y if ARCH = "sparc64"
+	select ARCH_SUPPORTS_MSI
 	select HAVE_FUNCTION_TRACER
 	select HAVE_KRETPROBES
 	select HAVE_KPROBES
@@ -478,7 +479,6 @@ config SUN_LDOMS
 
 config PCI
 	bool "Support for PCI and PS/2 keyboard/mouse"
-	select ARCH_SUPPORTS_MSI if SPARC64
 	help
 	  Find out whether your system includes a PCI bus. PCI is the name of
 	  a bus system, i.e. the way the CPU talks to the other stuff inside