msm: ipa: Do not set perf profile on DPL

For USB use cases there are two PM clients which are
created: USB and USB_DPL. DPL should not be setting
performance profile with IPA PM as it is not
a tethering interface.

Change-Id: Ie4ab7482a39a1520e2c2ed4e42560d23542a762c
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>