usb: bam: Fix IPA resource manager registration

Only a single USB BAM can be registered with IPA RM at
any given moment, where USB BAM driver currently support both
SSBAM and HSBUM.
With this fix, only the BAMs which are actually used are
registered with IPA RM. In addition, HSBAM was removed
from krypton dtsi since it is not used by this target.

Change-Id: I2e8e2835160978a65616d11ab8fb6cc0dc58fa10
Signed-off-by: Bar Weiner <bweiner@codeaurora.org>