USB: phy: msm: Remove ACA and SRP, HNP related code

SRP, HNP and ACA feature are no more supported. Remove this code to
simplify state machines and driver logic as well as improve readability.

Also fix compilation errors due to missing changes

Change-Id: I6da961e68f8c9db12c712d427f05cb4c8878b7e7
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>