imx8mp: Remove parts MIMX8ML7 and MIMX8ML5 support

Latest datasheet revE has removed MIMX8ML7D/5D/7C/5C parts, so
update u-boot to remove decoding and support for those parts.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index 15d1cba..5f0c1ae 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -67,13 +67,10 @@
 #define is_imx8mndl() (is_cpu_type(MXC_CPU_IMX8MNDL))
 #define is_imx8mnsl() (is_cpu_type(MXC_CPU_IMX8MNSL))
 #define is_imx8mp() (is_cpu_type(MXC_CPU_IMX8MP)  || is_cpu_type(MXC_CPU_IMX8MPD) || \
-	is_cpu_type(MXC_CPU_IMX8MPL) || is_cpu_type(MXC_CPU_IMX8MP7) || \
-	is_cpu_type(MXC_CPU_IMX8MP6) || is_cpu_type(MXC_CPU_IMX8MP5))
+	is_cpu_type(MXC_CPU_IMX8MPL) || is_cpu_type(MXC_CPU_IMX8MP6))
 #define is_imx8mpd() (is_cpu_type(MXC_CPU_IMX8MPD))
 #define is_imx8mpl() (is_cpu_type(MXC_CPU_IMX8MPL))
-#define is_imx8mp7() (is_cpu_type(MXC_CPU_IMX8MP7))
 #define is_imx8mp6() (is_cpu_type(MXC_CPU_IMX8MP6))
-#define is_imx8mp5() (is_cpu_type(MXC_CPU_IMX8MP5))
 
 #define is_imx8qxp() (is_cpu_type(MXC_CPU_IMX8QXP))