fix(ast2700): fix mpll calculate statement

pll_reg.b.bypass equal to 1U, bypass the mpll calculating
pll_reg.b.bypass equal to 0U, need to calculate mpll

Change-Id: I6cace1509d9429a97c7c9481dc1e2e4f95134d6c
Signed-off-by: Kevin Chen <kevin_chen@aspeedtech.com>
1 file changed