dt-bindings: qpnp-smb5: Support HW-controlled thermal mitigation

Add support to configure/enable hardware controlled mitigation based on
DIE and connector temperature. H/W controlled scheme manipulates input
current limit(ICL) of charger whenever die or connector temperature
crosses configured threshold.

Change-Id: I327aeacd3e9767251d811bbf933fde5953ee4b93
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>