fix(imx8m): fix CSU_SA_REG to work with all sa registers

The csu found in the imx8mp has 3 csu_sa registers, before the fix not
all of them could be addressed.

The defines itself was imported from NXP's downstream version of the
trusted-firmware-a version 2.8[1].

[1]: https://github.com/nxp-imx/imx-atf/commit/0c52279fc4

Change-Id: Ia3653118bba82df9244c819a5c5f37bdc4e89c49
Signed-off-by: Ji Luo <ji.luo@nxp.com>
Signed-off-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
1 file changed