msm: ipa: Add support of IPA2 driver

Add support of IPAv2 driver for sdm660 target
Make following changes:
	- Fix copyright info.
	- Fix checkpatch warnings and errors (Require some changes
	  in indentation)

Change-Id: I831beb3f9b6e376803001a37d022914735dc7bf8
Signed-off-by: Praveen Kurapati <pkurapat@codeaurora.org>