stm32mp: add support of STM32MP13x Rev.Y

Add support of STM32MP13x Rev.Y for the Silicon revision REV_ID = 0x1003.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
index 4b564e8..f19a70e 100644
--- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
+++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
@@ -41,6 +41,7 @@
 
 #define CPU_REV1	0x1000
 #define CPU_REV1_1	0x1001
+#define CPU_REV1_2	0x1003
 #define CPU_REV2	0x2000
 #define CPU_REV2_1	0x2001
 
diff --git a/arch/arm/mach-stm32mp/stm32mp13x.c b/arch/arm/mach-stm32mp/stm32mp13x.c
index bd3f24c..845d973 100644
--- a/arch/arm/mach-stm32mp/stm32mp13x.c
+++ b/arch/arm/mach-stm32mp/stm32mp13x.c
@@ -126,6 +126,9 @@
 	case CPU_REV1_1:
 		cpu_r = "Z";
 		break;
+	case CPU_REV1_2:
+		cpu_r = "Y";
+		break;
 	default:
 		cpu_r = "?";
 		break;