ARM: delete struct sys_timer

Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html

Includes mach-omap2 fixes from Igor Grinberg.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-lpc32xx/timer.c b/arch/arm/mach-lpc32xx/timer.c
index c40667c..88bd4ce 100644
--- a/arch/arm/mach-lpc32xx/timer.c
+++ b/arch/arm/mach-lpc32xx/timer.c
@@ -100,7 +100,7 @@
  * clocks need to be enabled here manually and then tagged as used in
  * the clock driver initialization
  */
-static void __init lpc32xx_timer_init(void)
+void __init lpc32xx_timer_init(void)
 {
 	u32 clkrate, pllreg;
 
@@ -161,8 +161,3 @@
 	clocksource_mmio_init(LPC32XX_TIMER_TC(LPC32XX_TIMER1_BASE),
 		"lpc32xx_clksrc", clkrate, 300, 32, clocksource_mmio_readl_up);
 }
-
-struct sys_timer lpc32xx_timer = {
-	.init		= &lpc32xx_timer_init,
-};
-