[PATCH v2 2/2] staging: fbtft: use alternate screen pointer

[Dan Carpenter]

The change to fbtft_write_vmem16_bus9() is a bugfix, which is great, but
it's not mentioned in the changelog.  Really it should be a separate
commit.

Fixes: 02eb884f4e26 ('drivers: staging: fbtft: fbtft-bus.c: Fix different address space warning on I/O mem')

So it looks like this:
[patch 1] fb.h: Provide alternate screen_base pointer
[patch 2] sed /screen_base/screen_buffer/
[patch 3] fix a bug in fbtft_write_vmem16_bus9()

regards,
dan carpenter