keyboard_mkbp: report switches result until init'd
keyboard_mkbp: report switches result until init'd

When sysjump, the switch results will be re-evluated, and
if the AP is up, this might report the intermediate switch states
and misalign the switches states between EC and AP.

This CL delay reporting the switches until all the switches are inited.

BUG=b:173962511
TEST=AP boot to OS, sysjump, and system stays at S0
BRANCH=none

Change-Id: Ifce7654ae8f6eb651cf1f7402c8e9e34f1b713f6
Signed-off-by: Eric Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2607206
Reviewed-by: Ting Shen <c671d3efec3d7e7e285f3788bf0d1ba4c8605b78@chromium.org>

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