feat(versal): update macro name to generic and move to common place

Update TZ_VERSION macro name to generic macro name and move to
common header file so that it can be used for keystoneb.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@xilinx.com>
Acked-by: Tanmay Shah <tanmay.shah@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Change-Id: Ic3819eea78b6c7b51ffaa13081026dd191b76125