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-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c
index 5353adf..e791244 100644
--- a/arch/arm/mach-shmobile/board-armadillo800eva.c
+++ b/arch/arm/mach-shmobile/board-armadillo800eva.c
@@ -1192,9 +1192,6 @@
 static void __init eva_add_early_devices(void)
 {
 	r8a7740_add_early_devices();
-
-	/* override timer setup with board-specific code */
-	shmobile_timer.init = eva_earlytimer_init;
 }
 
 #define RESCNT2 IOMEM(0xe6188020)
@@ -1216,7 +1213,7 @@
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= eva_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= eva_earlytimer_init,
 	.dt_compat	= eva_boards_compat_dt,
 	.restart	= eva_restart,
 MACHINE_END