arm: omap2: timer: provide generic sync32k_timer_init function

instead of constantly defining a small wrapper
around __omap_sync32k_timer_init(), let's define
a generic one which can be used by all OMAPs.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --cc arch/arm/mach-omap2/board-generic.c
Simple merge

diff --cc arch/arm/mach-omap2/board-ldp.c
Simple merge

diff --cc arch/arm/mach-omap2/board-rx51.c
Simple merge

diff --cc arch/arm/mach-omap2/common.h
Simple merge

diff --cc arch/arm/mach-omap2/timer.c
Simple merge