x86: Allow overriding TSC_FREQ_IN_MHZ

We should allow the value of TSC_FREQ_IN_MHZ to be overridden by
the one in arch/cpu/<xxx>/Kconfig.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
1 file changed