arm: stick with gcc 7.4.0 and Linux 4.9.x for ARM cortex-a53

target/config/Config.in.compiler

@@ -49,6 +49,7 @@ config ADK_TOOLCHAIN_GCC_9
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_CPU_ARM_ARM11MPCORE
+	depends on !ADK_TARGET_CPU_ARM_CORTEX_A53
 
 config ADK_TOOLCHAIN_GCC_8
 	bool "8.3.0"
@@ -59,6 +60,7 @@ config ADK_TOOLCHAIN_GCC_8
 	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_ARCH_OR1K
 	depends on !ADK_TARGET_CPU_ARM_ARM11MPCORE
+	depends on !ADK_TARGET_CPU_ARM_CORTEX_A53
 
 config ADK_TOOLCHAIN_GCC_7
 	bool "7.4.0"

target/linux/Config.in.kernelversion

@@ -42,6 +42,7 @@ config ADK_TARGET_LINUX_KERNEL_VERSION_5_3
 	depends on !ADK_TARGET_ARCH_CRIS
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_CPU_ARM_ARM11MPCORE
+	depends on !ADK_TARGET_CPU_ARM_CORTEX_A53
 
 config ADK_TARGET_LINUX_KERNEL_VERSION_4_19
 	bool "4.19.75"
@@ -54,6 +55,7 @@ config ADK_TARGET_LINUX_KERNEL_VERSION_4_19
 	depends on !ADK_TARGET_ARCH_RISCV32
 	depends on !ADK_TARGET_ARCH_RISCV64
 	depends on !ADK_TARGET_CPU_ARM_ARM11MPCORE
+	depends on !ADK_TARGET_CPU_ARM_CORTEX_A53
 
 config ADK_TARGET_LINUX_KERNEL_VERSION_4_14
 	bool "4.14.142"
@@ -67,6 +69,7 @@ config ADK_TARGET_LINUX_KERNEL_VERSION_4_14
 	depends on !ADK_TARGET_ARCH_RISCV32
 	depends on !ADK_TARGET_ARCH_RISCV64
 	depends on !ADK_TARGET_CPU_ARM_ARM11MPCORE
+	depends on !ADK_TARGET_CPU_ARM_CORTEX_A53
 
 config ADK_TARGET_LINUX_KERNEL_VERSION_4_9
 	bool "4.9.179"