feat(imx8m): make psci common code pie compatible

Swap the BL31_BASE define with the BL31_START symbol. This is required
for later added PIE support because the symbol location can be relocated
whereas the define can't be relocated. In case of disabled PIE support
BL31_START equals BL31_BASE and so we don't need a ifdef.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Change-Id: Ic1bbf3af5b346898bfcbb207ffc27d9a5bdcaae7
1 file changed