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-iop13xx/iq81340mc.c

@@ -84,17 +84,13 @@ static void __init iq81340mc_timer_init(void)
 	iop_init_time(bus_freq);
 }
 
-static struct sys_timer iq81340mc_timer = {
-       .init       = iq81340mc_timer_init,
-};
-
 MACHINE_START(IQ81340MC, "Intel IQ81340MC")
 	/* Maintainer: Dan Williams <dan.j.williams@intel.com> */
 	.atag_offset    = 0x100,
 	.init_early     = iop13xx_init_early,
 	.map_io         = iop13xx_map_io,
 	.init_irq       = iop13xx_init_irq,
-	.timer          = &iq81340mc_timer,
+	.init_time	= iq81340mc_timer_init,
 	.init_machine   = iq81340mc_init,
 	.restart	= iop13xx_restart,
 MACHINE_END

arch/arm/mach-iop13xx/iq81340sc.c

@@ -86,17 +86,13 @@ static void __init iq81340sc_timer_init(void)
 	iop_init_time(bus_freq);
 }
 
-static struct sys_timer iq81340sc_timer = {
-       .init       = iq81340sc_timer_init,
-};
-
 MACHINE_START(IQ81340SC, "Intel IQ81340SC")
 	/* Maintainer: Dan Williams <dan.j.williams@intel.com> */
 	.atag_offset    = 0x100,
 	.init_early     = iop13xx_init_early,
 	.map_io         = iop13xx_map_io,
 	.init_irq       = iop13xx_init_irq,
-	.timer          = &iq81340sc_timer,
+	.init_time	= iq81340sc_timer_init,
 	.init_machine   = iq81340sc_init,
 	.restart	= iop13xx_restart,
 MACHINE_END