Tweak entropy, faster read_random

Signed-off-by: artas182x <artas182x@gmail.com>
Revert "OMAP4: SGX: Set DPLL PER m7x2 as source for SGX FCLK [imoseyon]"

This reverts commit 2fc07df35365866fde5d7087471843ffffe92b1a.
Test part 2