usb: ci13xxx_udc: Add SPS BAM-to-BAM support

Adding new support to enable USB-Peripheral
BAM-to-BAM transactions.
Changes were added to the UDC to support
"legacy/regular" USB transfers and
endless BAM-to-BAM transfers.

To avoid adding new vendor specific UDC file
to support the new feature and keep the UDC
as a generic as possiblea, USB request holds
a vendor specific data that distinguish between
the two transfer types.

USB BAM will be added in seperate commit.

Change-Id: I3211a122fe5236cda2dbe844b44f52a2b2063baf
Signed-off-by: Ofir Cohen <ofirc@codeaurora.org>
Signed-off-by: Amit Blay <ablay@codeaurora.org>
[sboyd: only take ci13xxx_udc part]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>