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    ps8751: enable software sync. · 5a086f5c
    Caveh Jalali authored
    this turns on ps8751 firmware update during software sync on
    reef/electro and derivative boards.
    
    testing on electro:
    
    with debug code enabled in the ps8751 driver (i.e. forced update),
    we can see the update taking place in the console logs.  when no update
    is needed, we simply see:
    
    ps8751.1: vendor 0x1da0 product 0x8751 device 0x0001 hw_rev A3 fw_rev 0x37
    
    reported from the update driver, verifying that we've enabled the
    update driver in the board file.
    
    we have a working design doc for firmware updates:
    
    https://goto.google.com/obvph
    
    
    
    also, spot checked nasher build to verify defconfig changes carry over
    to derivative boards.
    
    TEST=updated ps8751 firmware on electro
    
    BUG=b:35586896
    BRANCH=none
    
    Change-Id: I2c777425d8d266f833b3da6fa255c76084989401
    Signed-off-by: default avatarCaveh Jalali <caveh@google.com>
    Reviewed-on: https://chromium-review.googlesource.com/502708
    
    
    Reviewed-by: default avatarJulius Werner <jwerner@chromium.org>
    5a086f5c