drivers: thermal: qmi_cdev: Add new pa cooling device

Add support for an additional pa mitigation device. This support will
enable the driver to expose both the pa based mitigation devices.

Change-Id: I750b39a3813c8d85da1800db860b1aa3a9041739
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>