mb/google/poppy: Rework OV13858 power on sequence

In particular:

- Set voltage before enabling regulators

- Enable regulators and the clock without any sleeping in between. There's
  no need to wait there.

- Sleep 1 ms in order to wait for regulator voltages settling before
  lifting xshutdown.

BUG=chromium:959232

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Change-Id: I0f8857ae369d5038f293a0e2c48c681df535ad86
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36744
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

0 files changed, 0 insertions, 0 deletions