arm/imx2x: removes a bunch of sparse-warnings

Here are some of the warnings that get fixed by this:

> 200 times: warning: cast adds address space to expression (<asn:2>)
twelve times: warning: symbol 'xxx' was not declared. Should it be static
two times: warning: symbol 'clock' shadows an earlier one
five times: warning: incorrect type in initializer (different address spaces)

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c
index 536bf64..4548631 100644
--- a/arch/arm/mach-mx2/mx27ads.c
+++ b/arch/arm/mach-mx2/mx27ads.c
@@ -266,7 +266,7 @@
 	mx27_clocks_init(fref);
 }
 
-struct sys_timer mx27ads_timer = {
+static struct sys_timer mx27ads_timer = {
 	.init	= mx27ads_timer_init,
 };
 
@@ -279,7 +279,7 @@
 	},
 };
 
-void __init mx27ads_map_io(void)
+static void __init mx27ads_map_io(void)
 {
 	mxc_map_io();
 	iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));