CC312: Add BL1_2_IMAGE_LEN

Adds BL1_2_IMAGE_LEN into internal otp data struct to align with the
changes in BL1 boot flow.

Signed-off-by: Emekcan Aras <emekcan.aras@arm.com>
Change-Id: I2d64a4c439bdfdba2c159fe0bc127920353459c1
1 file changed