arc: Upgrade to Linux 4.8

Linux 4.8 is required for ARC ABI v4.

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

README.md

@@ -85,8 +85,8 @@ Latest stable release from https://kernel.org/ is recommended, and only
 versions >= 3.9 are supported. Linux sources should be located in the directory
 named `linux` that is the sibling of this `toolchain` directory. For example:
 
-    $ wget https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.7.2.tar.xz
-    $ tar xaf linux-4.7.2.tar.xz --transform=s/linux-4.7.2/linux/
+    $ wget https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.8.2.tar.xz
+    $ tar xaf linux-4.8.2.tar.xz --transform=s/linux-4.8.2/linux/
 
 ### Using Git repositories
 
@@ -127,7 +127,7 @@ config/arc-dev.sh file, which at the moment of this writing are:
 * gdb - arc-2016.09-gdb
 * newlib - arc-2016.09
 * uClibc - arc-2016.09
-* Linux - linux-4.7.y
+* Linux - linux-4.8.y
 
 Note, however that if `build-all.sh` will try to checkout repositories to their
 latest state, which is a default behaviour, then it will anyway fetch

config/arc-dev.sh

@@ -3,4 +3,4 @@ gcc=gcc:arc-6.x-dev
 gdb=gdb:arc-2016.09-gdb
 newlib=newlib:arc-2016.09
 uclibc=uClibc:arc-2016.09
-linux=linux:linux-4.7.y
+linux=linux:linux-4.8.y