As we are moving STACK and HEAP from OCSRAM to HSMSRAM, move DM
data to end of BSS section so that we can have contagious memory
block for STACK and HEAP.

Signed-off-by: Kamlesh Gurudasani <kamlesh@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>