hic: fix master connection hang with BT 4.1+ chips

Remote device requests parameter change and until we reply, nothing
happens. This change denies any such requests corectly, allowing the
connection to proceed on the master's (our) terms, just as it should
be.

Change-Id: Iaad389e9aae5b62973117d7c2a4e334be89a768e
BUG=b:74813838
TEST=make master LE connection, observe event arrive and ret replied to, connection does not hang
2 files changed