usb: typec: ucsi: check cci busy during PPM reset

[Why]
Following the spec of UCSI, EC may return CCI_BUSY for PPM reset cmd.

[How]
Check CCI_BUSY bit.

Jira ID: SCSWATH-10
Signed-off-by: Liang Liang (Leo) <liang.liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>