hatch: Enable ps8751 firmware update

BUG=b:129727749
BRANCH=none
CQ-DEPEND=CL:*1140410
TEST=confirm ps8751 firmware is upgraded during sw sync:
...
ps8751.1: vendor 0x1da0 product 0x8751 device 0x0001 fw_rev 0x37
...
Update aux fw 0
ps8751.1: found SPI flash ID 0x1c11
ps8751.1: erased 20KB in 524ms
ps8751.1: verified 0KB in 0s
ps8751.1: programming 20KB...
ps8751.1: programmed 20KB in 37s
ps8751.1: verified 20KB in 25s
ps8751.1: vendor 0x1da0 product 0x8751 device 0x0001 fw_rev 0x3e
...

Change-Id: Idd124205b84e1e4450d95e8fad635f7c6ba34e99
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1553565
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
2 files changed