arc: switch to upstream binutils and gcc

target/config/Config.in.binutils

@@ -3,7 +3,6 @@
 
 choice
 prompt "Binutils version"
-default ADK_TOOLCHAIN_BINUTILS_ARC if ADK_TARGET_ARCH_ARC
 default ADK_TOOLCHAIN_BINUTILS_CSKY if ADK_TARGET_ARCH_CSKY
 default ADK_TOOLCHAIN_BINUTILS_NDS32 if ADK_TARGET_ARCH_NDS32
 default ADK_TOOLCHAIN_BINUTILS_2_20_1 if ADK_TARGET_ARCH_AVR32
@@ -34,10 +33,6 @@ config ADK_TOOLCHAIN_BINUTILS_NDS32
 	bool "2.24-nds32"
 	depends on ADK_TARGET_ARCH_NDS32
 
-config ADK_TOOLCHAIN_BINUTILS_ARC
-	bool "arc-2017.09-release"
-	depends on ADK_TARGET_ARCH_ARC
-
 config ADK_TOOLCHAIN_BINUTILS_CSKY
 	bool "2.27-c-sky"
 	depends on ADK_TARGET_ARCH_CSKY

target/config/Config.in.compiler

@@ -16,7 +16,6 @@ endchoice
 choice
 prompt "GCC version"
 depends on ADK_BUILD_COMPILER_GCC
-default ADK_TOOLCHAIN_GCC_ARC if ADK_TARGET_ARCH_ARC
 default ADK_TOOLCHAIN_GCC_CSKY if ADK_TARGET_ARCH_CSKY
 default ADK_TOOLCHAIN_GCC_OR1K if ADK_TARGET_ARCH_OR1K
 default ADK_TOOLCHAIN_GCC_NDS32 if ADK_TARGET_ARCH_NDS32
@@ -59,10 +58,6 @@ config ADK_TOOLCHAIN_GCC_NDS32
 	bool "4.9.4-nds32"
 	depends on ADK_TARGET_ARCH_NDS32
 
-config ADK_TOOLCHAIN_GCC_ARC
-	bool "arc-2017.09-release"
-	depends on ADK_TARGET_ARCH_ARC
-
 config ADK_TOOLCHAIN_GCC_4_4
 	bool "4.4.7"
 	depends on ADK_TARGET_ARCH_AVR32

toolchain/binutils/Makefile.inc

@@ -16,13 +16,6 @@ PKG_HASH:=		cd717966fc761d840d451dbd58d44e1e5b92949d2073d75b73fccb476d772fcf
 PKG_SITES:=		${MASTER_SITE_GNU:=binutils/}
 DISTFILES:=		${PKG_NAME}-${PKG_VERSION}.tar.gz
 endif
-ifeq ($(ADK_TOOLCHAIN_BINUTILS_ARC),y)
-PKG_VERSION:=		arc-2017.09-release
-PKG_GIT:=		tag
-PKG_RELEASE:=		1
-PKG_SITES:=		https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb.git
-DISTFILES:=		${PKG_NAME}-${PKG_VERSION}.tar.xz
-endif
 ifeq ($(ADK_TOOLCHAIN_BINUTILS_CSKY),y)
 PKG_VERSION:=		binutils-2_27-branch-csky
 PKG_GIT:=		branch

toolchain/gcc/Makefile.inc

@@ -26,13 +26,6 @@ PKG_RELEASE:=		1
 DISTFILES:=		${PKG_NAME}-${PKG_VERSION}.tar.gz
 LIBSTDCXXVER:=		20
 endif
-ifeq ($(ADK_TOOLCHAIN_GCC_ARC),y)
-PKG_VERSION:=		arc-2017.09-release
-PKG_GIT:=		tag
-PKG_SITES:=		https://github.com/foss-for-synopsys-dwc-arc-processors/gcc.git
-PKG_RELEASE:=		1
-DISTFILES:=		${PKG_NAME}-${PKG_VERSION}.tar.xz
-endif
 ifeq ($(ADK_TOOLCHAIN_GCC_CSKY),y)
 PKG_VERSION:=		gcc-6-branch-csky
 PKG_GIT:=		branch