imx: Add basic support for the NXP IMXRT10xx SoC family

Add i.IMXRT family basic support.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 856f2d8..1e60a9f 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -104,11 +104,11 @@
 libs-y += arch/arm/lib/
 
 ifeq ($(CONFIG_SPL_BUILD),y)
-ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx5 mx6 mx7 mx35 imx8m imx8))
+ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx5 mx6 mx7 mx35 imx8m imx8 imxrt))
 libs-y += arch/arm/mach-imx/
 endif
 else
-ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx7ulp mx31 mx35 mxs imx8m imx8 vf610))
+ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx7ulp mx31 mx35 mxs imx8m imx8 imxrt vf610))
 libs-y += arch/arm/mach-imx/
 endif
 endif