imx9: add i.MX95 Kconfig and Makefile

This patch adds i.MX95 Kconfig and Makefile. i.MX95 uses SCMI.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx9/Makefile b/arch/arm/mach-imx/imx9/Makefile
index 45a9105..53cc97c 100644
--- a/arch/arm/mach-imx/imx9/Makefile
+++ b/arch/arm/mach-imx/imx9/Makefile
@@ -3,8 +3,13 @@
 # Copyright 2022 NXP
 
 obj-y += lowlevel_init.o
+
+ifeq ($(CONFIG_SCMI_FIRMWARE),y)
+obj-y += scmi/
+else
 obj-y += soc.o clock.o clock_root.o trdc.o
+endif
 
-#ifndef CONFIG_XPL_BUILD
+ifneq ($(CONFIG_SPL_BUILD),y)
 obj-y += imx_bootaux.o
-#endif
+endif
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