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-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index c66129b..5fad7ce 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -163,19 +163,11 @@
 	mx23_clocks_init();
 }
 
-static struct sys_timer imx23_timer = {
-	.init = imx23_timer_init,
-};
-
 static void __init imx28_timer_init(void)
 {
 	mx28_clocks_init();
 }
 
-static struct sys_timer imx28_timer = {
-	.init = imx28_timer_init,
-};
-
 enum mac_oui {
 	OUI_FSL,
 	OUI_DENX,
@@ -446,7 +438,7 @@
 	.map_io		= mx23_map_io,
 	.init_irq	= icoll_init_irq,
 	.handle_irq	= icoll_handle_irq,
-	.timer		= &imx23_timer,
+	.init_time	= imx23_timer_init,
 	.init_machine	= mxs_machine_init,
 	.dt_compat	= imx23_dt_compat,
 	.restart	= mxs_restart,
@@ -456,7 +448,7 @@
 	.map_io		= mx28_map_io,
 	.init_irq	= icoll_init_irq,
 	.handle_irq	= icoll_handle_irq,
-	.timer		= &imx28_timer,
+	.init_time	= imx28_timer_init,
 	.init_machine	= mxs_machine_init,
 	.dt_compat	= imx28_dt_compat,
 	.restart	= mxs_restart,