ERRATA_A57_829520 disables "indirect branch prediction" for
EL1 on cpu reset, leading to 15% drop in CPU performance
with coremark benchmarks.

Tegra210 already has a hardware fix for ARM BUG#829520,so
this errata is not needed.

This patch disables the errata to get increased performance
numbers.

Change-Id: I0b42e8badd19a8101f6a55d80eb2d953597d3c20
Signed-off-by: Mithun Maragiri <mmaragiri@nvidia.com>