ghost: Boost hispeed_freq up a notch

* Boost hispeed_freq from 918MHz to 1134MHz
* 1134MHz uses the 1350MHz L2 instead of the 810MHz L2 used by 918MHz.
* This should help alleviate the lack of cpu hotplugging on touch.

Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>