arch: arm: Fix cache enable code

Cache enable code uses ACTLR register to enable L2 cache, ACTLR
register is implementation defined and for krait cpu this code
is disabling i-cache forcefully. This code impacts hlos performace
by disabling i-cache forcefully.

CRs-Fixed: 663851
Change-Id: I896cdc7d3f756b5c7ee98cf789f9c03ec0b6e723
1 file changed