Save some space by enabling the log messages like bl33 address
only for debug builds. Also check the bl33 and bl32 address and
print only if this is not NULL.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Change-Id: I58d846bf69a75e839eb49abcbb9920af13296886