powerpc/t2080: updating rcw for silicon v1.1

T2080 v1.1 requires different MEM_PLL_RAT from previous v1.0,
and also update core frequency to 1.8GHz for v1.1.
We reserve the support for T2080 v1.0 and enable v1.1 by default.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2 files changed