msm: tspp2: Reset TSPP2 core on device open

Add reset of TSPP2 HW core when opening the device for use.
This is required for proper operation of the HW.

Change-Id: I5fdb904948a5a11d7d147662351b844e5a24cec6
Signed-off-by: Liron Kuch <lkuch@codeaurora.org>