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>

arch/arm/mach-imx/mach-mx31_3ds.c

@@ -762,10 +762,6 @@ static void __init mx31_3ds_timer_init(void)
 	mx31_clocks_init(26000000);
 }
 
-static struct sys_timer mx31_3ds_timer = {
-	.init	= mx31_3ds_timer_init,
-};
-
 static void __init mx31_3ds_reserve(void)
 {
 	/* reserve MX31_3DS_CAMERA_BUF_SIZE bytes for mx3-camera */
@@ -780,7 +776,7 @@ MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
 	.init_early = imx31_init_early,
 	.init_irq = mx31_init_irq,
 	.handle_irq = imx31_handle_irq,
-	.timer = &mx31_3ds_timer,
+	.init_time	= mx31_3ds_timer_init,
 	.init_machine = mx31_3ds_init,
 	.reserve = mx31_3ds_reserve,
 	.restart	= mxc_restart,