feat(rdn2): add defines needed for spmc-el3

Add the following platform specific flags to enable SPMC build.

SECURE_PARTITION_COUNT: Number of secure partitions supported
NS_PARTITION_COUNT: Number of non secure partitions supported
MAX_EL3_LP_DESCS_COUNT: Number of logical partitions supported

Signed-off-by: Sayanta Pattanayak <sayanta.pattanayak@arm.com>
Signed-off-by: Nishant Sharma <nishant.sharma@arm.com>
Change-Id: I33d46be9dffd0acfc088bc1701dc0b1ed92dbf46
1 file changed