feat(imx8m): enable snvs privileged registers access

Allow non-privileged access to all SNVS registers in case of no TEE is
available.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Change-Id: I44686a3639a68c72c7eacc80691c294d5c32c9ae
diff --git a/plat/imx/imx8m/imx8mn/platform.mk b/plat/imx/imx8m/imx8mn/platform.mk
index a6b43f2..e0826e2 100644
--- a/plat/imx/imx8m/imx8mn/platform.mk
+++ b/plat/imx/imx8m/imx8mn/platform.mk
@@ -34,6 +34,7 @@
 				plat/imx/imx8m/imx8m_ccm.c			\
 				plat/imx/imx8m/imx8m_csu.c			\
 				plat/imx/imx8m/imx8m_psci_common.c		\
+				plat/imx/imx8m/imx8m_snvs.c			\
 				plat/imx/imx8m/imx8mn/imx8mn_bl31_setup.c	\
 				plat/imx/imx8m/imx8mn/imx8mn_psci.c		\
 				plat/imx/imx8m/imx8mn/gpc.c			\