msm: kgsl: Remove CP_ADDR_MODE_CNTL from powerup register list

CP_ADDR_MODE_CNTL is not needed in powerup register list
anymore because now GMU firmware is saving and restoring
it to make sure CP addressing mode is correct before it
starts CP.

Change-Id: I57f921ce90996b8ccf5ffca38db0ab97d135bdbb
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>