ep93xx timer: Rename struct timer_reg pointers

ep93xx timer: Renamed pointers to struct timer_regs from name 'timer' to
'timer_regs' in order to avoid confusion with the global variable 'timer'

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
diff --git a/cpu/arm920t/ep93xx/timer.c b/cpu/arm920t/ep93xx/timer.c
index 31304b7..943f193 100644
--- a/cpu/arm920t/ep93xx/timer.c
+++ b/cpu/arm920t/ep93xx/timer.c
@@ -63,9 +63,9 @@
 
 static inline unsigned long read_timer(void)
 {
-	struct timer_regs *timer = (struct timer_regs *)TIMER_BASE;
+	struct timer_regs *timer_regs = (struct timer_regs *)TIMER_BASE;
 
-	return TIMER_MAX_VAL - readl(&timer->timer3.value);
+	return TIMER_MAX_VAL - readl(&timer_regs->timer3.value);
 }
 
 /*
@@ -120,17 +120,17 @@
 
 int timer_init(void)
 {
-	struct timer_regs *timer = (struct timer_regs *)TIMER_BASE;
+	struct timer_regs *timer_regs = (struct timer_regs *)TIMER_BASE;
 
 	/* use timer 3 with 508KHz and free running */
-	writel(TIMER_CLKSEL, &timer->timer3.control);
+	writel(TIMER_CLKSEL, &timer_regs->timer3.control);
 
 	/* set initial timer value 3 */
-	writel(TIMER_MAX_VAL, &timer->timer3.load);
+	writel(TIMER_MAX_VAL, &timer_regs->timer3.load);
 
 	/* Enable the timer */
 	writel(TIMER_ENABLE | TIMER_CLKSEL,
-		&timer->timer3.control);
+		&timer_regs->timer3.control);
 
 	reset_timer_masked();