[MIPS] move vr41xx_calculate_clock_frequency() to plat_time_init()

Moved vr41xx_calculate_clock_frequency() to plat_time_init().
This function relates to the timer function.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
1 file changed