stm32mp1: set BL sizes regardless of flags
stm32mp1: set BL sizes regardless of flags

BL2 size is set to 100kB, and BL32 to 72kB, regardless of OP-TEE
or stack protector flags.

Signed-off-by: Yann Gautier <e753f6969c288905606e3c07464886d4f1fc1be0@foss.st.com>
Change-Id: Id7411bd55a4140718d64a647d81037720615fc81

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware