Disable speculative loads only if SSBS is supported
Disable speculative loads only if SSBS is supported

Examine the ID_AA64PFR1_EL1 bits 7:4 to see if speculative
loads (SSBS) is implemented, before disabling speculative
loads.

Change-Id: I7607c45ed2889260d22a94f6fd9af804520acf67
Signed-off-by: Sami Mujawar <7ee5866756d84adbbb7f8117a93f0bf1abd52ae0@arm.com>

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