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/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
index eb93fd1..ef1b3cd 100644
--- a/arch/arm/plat-mxc/time.c
+++ b/arch/arm/plat-mxc/time.c
@@ -52,11 +52,9 @@
 
 static int __init mxc_clocksource_init(struct clk *timer_clk)
 {
-	unsigned int clock;
+	unsigned int c = clk_get_rate(timer_clk);
 
-	clock = clk_get_rate(timer_clk);
-
-	clocksource_mxc.mult = clocksource_hz2mult(clock,
+	clocksource_mxc.mult = clocksource_hz2mult(c,
 					clocksource_mxc.shift);
 	clocksource_register(&clocksource_mxc);
 
@@ -176,11 +174,9 @@
 
 static int __init mxc_clockevent_init(struct clk *timer_clk)
 {
-	unsigned int clock;
+	unsigned int c = clk_get_rate(timer_clk);
 
-	clock = clk_get_rate(timer_clk);
-
-	clockevent_mxc.mult = div_sc(clock, NSEC_PER_SEC,
+	clockevent_mxc.mult = div_sc(c, NSEC_PER_SEC,
 					clockevent_mxc.shift);
 	clockevent_mxc.max_delta_ns =
 			clockevent_delta2ns(0xfffffffe, &clockevent_mxc);