toolchain: Bump ARC tools to arc-2018.03-rc1

This commit bumps ARC toolchain to arc-2018.03-rc1.
We want to test how new toolchain-rc1 builds packages,
so we can make fixes before release of toolcain.

ARC GNU tools of version arc-2018.03-rc1 bring some quite significant changes like:
 * Binutils v2.29.51 with additional ARC patches
 * GCC 7.3.1 with additional ARC patches

Please note that it is a release candidate
and it might contain some breakages,
please don't use it for production builds.

Signed-off-by: Evgeniy Didin <didin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: arc-buildroot@synopsys.com
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/binutils/Config.in.host

@@ -24,7 +24,7 @@ endchoice
 
 config BR2_BINUTILS_VERSION
 	string
-	default "arc-2017.09-release"	if BR2_BINUTILS_VERSION_ARC
+	default "arc-2018.03-rc1"	if BR2_BINUTILS_VERSION_ARC
 	default "2.28.1"	if BR2_BINUTILS_VERSION_2_28_X
 	default "2.29.1"	if BR2_BINUTILS_VERSION_2_29_X
 	default "2.30"		if BR2_BINUTILS_VERSION_2_30_X

package/binutils/binutils.hash

@@ -4,4 +4,4 @@ sha512  d748d22306477d60d921078804d21943248c23fca0707aac9b016a352c01c75ca69e8262
 sha512  e747ea20d8d79fcd21b9d9f6695059caa7189d60f19256da398e34b789fea9a133c32b192e9693b5828d27683739b0198431bf8b3e39fb3b04884cf89d9aa839  binutils-2.30.tar.xz
 
 # Locally calculated (fetched from Github)
-sha512  cefff7521dc4ebd8b9773af4f173821ad82dcb3f1fbd0bfdf03e148ba8cec1262b876b221da628ff5db16c30b18c6cbf5ffbec0fddb4677182524684c4c232c1  binutils-arc-2017.09-release.tar.gz
+sha512  7b8c4a5ec38a234b3ca097ce38e0e60628561251085fc83a614c8cf476eec53ca77ab34088987c80ce79772d5e2cc513b28a7df45f3dc5d0d3a82296e1f6474f  binutils-arc-2018.03-rc1.tar.gz

package/binutils/binutils.mk

@@ -9,13 +9,13 @@
 BINUTILS_VERSION = $(call qstrip,$(BR2_BINUTILS_VERSION))
 ifeq ($(BINUTILS_VERSION),)
 ifeq ($(BR2_arc),y)
-BINUTILS_VERSION = arc-2017.09-release
+BINUTILS_VERSION = arc-2018.03-rc1
 else
 BINUTILS_VERSION = 2.29.1
 endif
 endif # BINUTILS_VERSION
 
-ifeq ($(BINUTILS_VERSION),arc-2017.09-release)
+ifeq ($(BINUTILS_VERSION),arc-2018.03-rc1)
 BINUTILS_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,binutils-gdb,$(BINUTILS_VERSION))
 BINUTILS_SOURCE = binutils-$(BINUTILS_VERSION).tar.gz
 BINUTILS_FROM_GIT = y