usb: omap4: add HSIC support

The OMAP4 HS USB host subsystem supports the configurations
with two HSIC interfaces. This patch adds the ability
to use both of them

Change-Id: I95478563e07bba6811fed56abe442e640ccd71e4
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@ti.com>