ARM: 6483/1: arm & sh: factorised duplicated clkdev.c

factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.

as the code is identical at 99%

put the arch specific code for allocation as example in asm/clkdev.h

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5c075f5..cfc5106 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,7 +1,7 @@
 config SUPERH
 	def_bool y
 	select EMBEDDED
-	select HAVE_CLK
+	select CLKDEV_LOOKUP
 	select HAVE_IDE if HAS_IOPORT
 	select HAVE_MEMBLOCK
 	select HAVE_OPROFILE