arm: rmobile: lager: Update calculation of CONFIG_SH_TMU_CLK_FREQ

CONFIG_SH_TMU_CLK_FREQ of lager is calculated from the external clock.
This defines RMOBILE_XTAL_CLK, this updates the calculation of
CONFIG_SH_TMU_CLK_FREQ.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
1 file changed