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/drivers/clk/Kconfig b/drivers/clk/Kconfig
new file mode 100644
index 0000000..4168c88
--- /dev/null
+++ b/drivers/clk/Kconfig
@@ -0,0 +1,4 @@
+
+config CLKDEV_LOOKUP
+	bool
+	select HAVE_CLK