power: smb5-lib: Fix Type-C CTM status

Typec-C connector temperature mitgation status is reported
one level higher than what it is supposed to be, which leads
to over-reduction of USB input current limit.

Fix it.

Change-Id: I547efece8e9cd6e2b076713af822b8dada2661f5
Signed-off-by: Harry Yang <harryy@codeaurora.org>