PaTCH] msm: Shift-up device iomaps and vmalloc area

From: https://www.codeaurora.org/gitweb/quic/la/?p=kernel/msm.git;a=commit;h=74394aee55bb2d92d05ad5cd373d8e553e101bee
[PATCH] msm: io: Shift up device iomaps to increase virtual address range

Shift up all the virtual addresses for the device iomaps by 256M
so that this range is free for use by the system.

From: https://www.codeaurora.org/gitweb/quic/la/?p=kernel/msm.git;a=commit;h=7bf9edd9cf4bec4029f5438dbb13cfc4f3674753
[PATCH] msm: Shift-up device iomaps and vmalloc area

Shifting these up increases the virtual address range available
for the kernel, which can be either used for vmalloc space or
the 1-1 mapping depending upon the target.