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-imx/mach-imx53.c b/arch/arm/mach-imx/mach-imx53.c
index 860284d..f579c61 100644
--- a/arch/arm/mach-imx/mach-imx53.c
+++ b/arch/arm/mach-imx/mach-imx53.c
@@ -44,26 +44,22 @@
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 
-static void __init imx53_timer_init(void)
-{
-	mx53_clocks_init_dt();
-}
-
-static struct sys_timer imx53_timer = {
-	.init = imx53_timer_init,
-};
-
 static const char *imx53_dt_board_compat[] __initdata = {
 	"fsl,imx53",
 	NULL
 };
 
+static void __init imx53_timer_init(void)
+{
+	mx53_clocks_init_dt();
+}
+
 DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
 	.map_io		= mx53_map_io,
 	.init_early	= imx53_init_early,
 	.init_irq	= mx53_init_irq,
 	.handle_irq	= imx53_handle_irq,
-	.timer		= &imx53_timer,
+	.init_time	= imx53_timer_init,
 	.init_machine	= imx53_dt_init,
 	.init_late	= imx53_init_late,
 	.dt_compat	= imx53_dt_board_compat,