cris: use gcc 10

target/config/Config.in.compiler

@@ -18,6 +18,7 @@ default ADK_TOOLCHAIN_GCC_KVX if ADK_TARGET_ARCH_KVX
 default ADK_TOOLCHAIN_GCC_LM32 if ADK_TARGET_ARCH_LM32
 default ADK_TOOLCHAIN_GCC_METAG if ADK_TARGET_ARCH_METAG
 default ADK_TOOLCHAIN_GCC_9 if ADK_TARGET_ARCH_BFIN && ADK_TARGET_BINFMT_FDPIC
+default ADK_TOOLCHAIN_GCC_10 if ADK_TARGET_ARCH_CRIS
 default ADK_TOOLCHAIN_GCC_11
 
 config ADK_TOOLCHAIN_GCC_GIT