doubleshot defconfig: capping def max freq to default 1.2Ghz

Users should use the Performance/Processor menu to
attain higher frequencies. Higher freqs are safe, but
htc's dafeualt max freq was 1.2Ghz for the device
so we go in line with that as defaults.

Change-Id: I017173ccd66a3753ab12f93f5967d6bd41f86bf2