ARM: mach-shmobile: Tidy up the Kconfig bits.

Presently each one of the CPUs manually selects the same feature set, and
there's a reasonable expectation that none of these will change for
future CPUs in the SH-Mobile / R-Mobile family, so we move those over to
the top-level ARCH_SHMOBILE.

While we're at it, all of the CPUs support optional GPIOs via the PFC,
do not have I/O ports, and expect sparse IRQ, so we bring the
configuration in line across the board.

This more or less brings the ARM-based parts in sync with their SH
counterparts.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 51dcd59..cc54343 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -5,26 +5,20 @@
 config ARCH_SH7367
 	bool "SH-Mobile G3 (SH7367)"
 	select CPU_V6
-	select HAVE_CLK
-	select COMMON_CLKDEV
 	select SH_CLK_CPG
-	select GENERIC_CLOCKEVENTS
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 
 config ARCH_SH7377
 	bool "SH-Mobile G4 (SH7377)"
 	select CPU_V7
-	select HAVE_CLK
-	select COMMON_CLKDEV
 	select SH_CLK_CPG
-	select GENERIC_CLOCKEVENTS
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 
 config ARCH_SH7372
 	bool "SH-Mobile AP4 (SH7372)"
 	select CPU_V7
-	select HAVE_CLK
-	select COMMON_CLKDEV
 	select SH_CLK_CPG
-	select GENERIC_CLOCKEVENTS
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 
 comment "SH-Mobile Board Type"