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/Kconfig b/arch/arm/Kconfig
index db524e7..81c71da 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -606,9 +606,14 @@
 	  (clock and power control, etc).
 
 config ARCH_SHMOBILE
-	bool "Renesas SH-Mobile"
+	bool "Renesas SH-Mobile / R-Mobile"
+	select HAVE_CLK
+	select COMMON_CLKDEV
+	select GENERIC_CLOCKEVENTS
+	select NO_IOPORT
+	select SPARSE_IRQ
 	help
-	  Support for Renesas's SH-Mobile ARM platforms
+	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
 
 config ARCH_RPC
 	bool "RiscPC"