uboot/prism: add hnvram support

This patch adds native hnvram support to u-boot. It loads the hnvram
contents when the board type is a GFLT300 and reconfigures mtdparts
and bootargs to match.

Change-Id: Ia9f9c9ee49bf199a3f2de7a1d4f50b138fd2d0d1
5 files changed