Fix hammerhead 1.2ghz min/max frequency error.

I don't think its coincidental that HH boots to 1.2 min/max, pretty sure this is the culprit.

MERGE THIS!

Revert "BoardConfig: Define TARGET_TOUCHBOOST_FREQUENCY to 1.2GHz"

This reverts commit 0ad5707da7fc6052b0ec170a33dde6f924a6ab81.

Conflicts:
	BoardConfig.mk

Change-Id: I544e5eb458181426272b62b029b0bba4b4933fb8