USB: OTG: msm: Skip ACA detection for Chipidea PHY

The Chipidea PHY can not generate ACA id change interrupt.  The software
needs to poll for the ACA id change.  To keep the design simple ACA
detection is not supported on Chipidea PHY.

Change-Id: I6be8798c48349157b4626ace5e51a537816ff06a
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>