Revert "fix(ti): do not take system power reference in bl31_platform_setup()"

The workaround that we required to get over the timing issue with our
Device Manager is fixed in [0], revert the workaround as it is no longer
required.

[0]: https://git.ti.com/cgit/processor-firmware/ti-linux-firmware/commit?id=9ad862b528112f7bc26d80668fbb9b38521cddf9

This reverts commit 9977948112d732935362a3fe8518e3b2e4b7f6b7. It also
adds a check to make this backward compatible.

Change-Id: Icf10f9df9558de1ae7ba6f5f586485111aac4f8d
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
1 file changed