feat(versal): replace irq array with switch case

Replaced array of interrupt to PM node index map with switch-case for
Versal. As a result, the size of code got reduced by 527 bytes. In case
of error return invalid node index i.e. XPM_NODEIDX_DEV_MIN.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: Ifb17366362e2d1757d8933e1ce29083f7ad86b8f
1 file changed