fix(versal): use correct macro name for ocm base address

In absence of definition, PLAT_OCM_BASE is always 0
and IS_TFA_IN_OCM(x) always returns true irrespective
of address passed to it. Reasoning is as mentioned in
Refer section 4.2.3 in
https://gcc.gnu.org/onlinedocs/gcc-3.0.2/cpp_4.html
Due to this,functionality for reservation of TF-A DDR memory in
dtb is never executed.

Signed-off-by: Amit Nagal <amit.nagal@amd.com>
Change-Id: Iafb6b7c6aec29bba22f8f7a8395f9caf97548157
1 file changed