arm: tegra: ahb: clean up ahb_gizmo configuration

1. remove tegra_init_ahb_gizmo_settings function from ahb.c which is duplicate
in common.c
2. correct AHB_MEM_PREFETCH_CFG5 offset
3. save/resotre new registers in t11x chip

bug 1292790

Change-Id: I1a339ccc10244ce7ccccc5b67bf137cb4c18046d
Signed-off-by: Jay Cheng <jacheng@nvidia.com>
Reviewed-on: http://git-master/r/234293
Reviewed-by: Riham Haidar <rhaidar@nvidia.com>
Tested-by: Riham Haidar <rhaidar@nvidia.com>
2 files changed