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Turn on the load switch to the FP MCU at startup, so the kernel can detect it and use it. The load switch enable pin is connected to the GPP_A11 PCH pin (aka PCH_FP_PWR_EN). BRANCH=none BUG=b:71986991 TEST=on Meowth, see the kernel detecting a cros_fp device at startup: [ 2.133456] cros-ec-spi spi-PRP0001:00: Fingerprint MCU detected. [ 2.157420] cros-ec-spi spi-PRP0001:00: Chrome EC device registered Change-Id: Id3c40b965a5f018c63481c2e2eea3fc8307352bd Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-on: https://review.coreboot.org/23329 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com>