feat(imx8m): add imx csu_sa enum type defines for imx8m

This ports the missing enum defines for the central security unit found
in NXPs i.MX8M socs. The defines itself where 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: Iad0c5d3733e9d29ead86334ba4bc5ce915018142
Signed-off-by: Ji Luo <ji.luo@nxp.com>
Signed-off-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
3 files changed