ARM: OMAP: USB: Fix potential resource overlap due to incorrect end address

The end address for the USB memory resources were incorrectly defined as
(<start> + <size>) instead of (<start> + <size - 1>) resulting in a
potential overlap with the start address of other resources.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Nishant Kamat <nskamat@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>