Kconfig cleanup (PARPORT_PC dependencies)

Remove messy dependencies from PARPORT_PC by having it depend on one
Kconfig symbol (ARCH_MIGHT_HAVE_PC_PARPORT) and having architectures
which need it, select ARCH_MIGHT_HAVE_PC_PARPORT in arch/*/Kconfig.
New architectures are unlikely to need PARPORT_PC, so this avoids
having an ever growing list of architectures to exclude. Those
architectures which do select ARCH_MIGHT_HAVE_PC_PARPORT in this
patch are the ones which have an asm/parport.h (or use the generic
version).

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Ingo Molnar <mingo@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
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CC: Russell King <linux@arm.linux.org.uk>
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CC: Tony Luck <tony.luck@intel.com>
CC: Fenghua Yu <fenghua.yu@intel.com>
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CC: "James E.J. Bottomley" <jejb@parisc-linux.org>
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drivers/parport/Kconfig

@@ -31,13 +31,17 @@ menuconfig PARPORT
 
 	  If unsure, say Y.
 
+config ARCH_MIGHT_HAVE_PC_PARPORT
+	bool
+	help
+	  Select this config option from the architecture Kconfig if
+	  the architecture might have PC parallel port hardware.
+
 if PARPORT
 
 config PARPORT_PC
 	tristate "PC-style hardware"
-	depends on (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV && !S390 && \
-		(!M68K || ISA) && !MN10300 && !AVR32 && !BLACKFIN && \
-		!XTENSA && !CRIS && !H8300
+	depends on ARCH_MIGHT_HAVE_PC_PARPORT
 
 	---help---
 	  You should say Y here if you have a PC-style parallel port. All