OMAP3: Move get_sys_clkin_sel() function to not duplicate code
The get_sys_clkin_sel() function is implemented by various boards, this
patch moves this function to a common place to not duplicate code.
board/omap3530beagle/omap3530beagle.c :398:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
board/igep00x0/igep00x0.c :142:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
board/omap3430sdp/omap3430sdp.c :194:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
board/omap3evm/omap3evm.c :246:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
board/omap3430labrador/omap3430sdp.c :191:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
board/overo/overo.c :349:void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel)
Signed-off-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>