imx9: Add i.MX94 CPU type and SoC-level Kconfig

Introduce support for the new i.MX94 processor, including its CPU type
and SoC-level Kconfig entry.

The i.MX94 is a new member of the i.MX9 family. It uses a System Manager
to handle system-level functions such as power, clock, sensor and pin
control. The System Manager runs on a Cortex-M processor, while the
Cortex-A processor communicates with it via the ARM SCMI protocol and a
messaging unit.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>

arch/arm/include/asm/arch-imx/cpu.h

@@ -78,6 +78,8 @@
 
 #define MXC_CPU_IMX95		0x1C1 /* dummy ID */
 
+#define MXC_CPU_IMX94		0x1C2 /* dummy ID */
+
 #define MXC_SOC_MX6		0x60
 #define MXC_SOC_MX7		0x70
 #define MXC_SOC_IMX8M		0x80

arch/arm/include/asm/mach-imx/sys_proto.h

@@ -97,6 +97,7 @@ struct bd_info;
 #define is_imx9302() (is_cpu_type(MXC_CPU_IMX9302))
 #define is_imx9301() (is_cpu_type(MXC_CPU_IMX9301))
 
+#define is_imx94() (is_cpu_type(MXC_CPU_IMX94))
 #define is_imx95() (is_cpu_type(MXC_CPU_IMX95))
 
 #define is_imx9121() (is_cpu_type(MXC_CPU_IMX9121))

arch/arm/mach-imx/imx9/Kconfig

@@ -38,6 +38,15 @@ config IMX95
 	select SPL_IMX_CONTAINER_USE_TRAMPOLINE
 	select IMX_PQC_SUPPORT if !IMX95_A0
 
+config IMX94
+	bool
+	select ARMV8_SPL_EXCEPTION_VECTORS
+	select DM_MAILBOX
+	select IMX9
+	select IMX_PQC_SUPPORT
+	select SCMI_FIRMWARE
+	select SPL_IMX_CONTAINER_USE_TRAMPOLINE
+
 config SYS_SOC
 	default "imx9"