hppa: switch to gcc 9 as 8.4.0 seems to have a regression and qemu does not start with it

target/config/Config.in.compiler

@@ -19,6 +19,7 @@ default ADK_TOOLCHAIN_GCC_NDS32 if ADK_TARGET_ARCH_NDS32
 default ADK_TOOLCHAIN_GCC_7 if ADK_TARGET_CPU_ARM_ARM11MPCORE
 default ADK_TOOLCHAIN_GCC_7 if ADK_TARGET_CPU_ARM_CORTEX_A53
 default ADK_TOOLCHAIN_GCC_9 if ADK_TARGET_ARCH_CSKY
+default ADK_TOOLCHAIN_GCC_9 if ADK_TARGET_ARCH_HPPA
 default ADK_TOOLCHAIN_GCC_9 if ADK_TARGET_ARCH_OR1K
 default ADK_TOOLCHAIN_GCC_8
 
@@ -40,6 +41,7 @@ config ADK_TOOLCHAIN_GCC_8
 	bool "8.4.0"
 	depends on !ADK_TARGET_ARCH_AVR32
 	depends on !ADK_TARGET_ARCH_CSKY
+	depends on !ADK_TARGET_ARCH_HPPA
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_ARCH_OR1K
@@ -51,6 +53,7 @@ config ADK_TOOLCHAIN_GCC_7
 	depends on !ADK_TARGET_ARCH_ARC
 	depends on !ADK_TARGET_ARCH_AVR32
 	depends on !ADK_TARGET_ARCH_CSKY
+	depends on !ADK_TARGET_ARCH_HPPA
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_ARCH_OR1K