arm: mach-omap2: Relax checks on OP-TEE location to allow pageable image

When the OP-TEE image is built for secure paging the load address may be
in SRAM, remove checks that prevent this.

Signed-off-by: Harinarayan Bhatta <harinarayan@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>