PS8805: Do not enable and disable DCI registers
PS8805: Do not enable and disable DCI registers

PS8805 is not like PS8751, which needs to rewrite the TCPC reg A0 bit 0
to enable the DCI registers. The DCI registers are always accessible.

Also there is a bug on firmware, like 0x8, 0xC, 0xD, that rewriting the
reg A0 bit 0 to 1 will make the TCPC I2C not accessible.

BRANCH=None
BUG=b:147772854
TEST=Verified on Trogdor, fw 0xC, 0xD, and 0xF, the TCPC I2C is
accessible.

Change-Id: Ie554d2b4022397801423fb3670305bf536b2cc20
Signed-off-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2015641
Reviewed-by: Stephen Boyd <eeb31768d3df4444d6703fd44d40e628b44c8e77@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec