[ARC] Update GLIBC_DYNAMIC_LINKER

Update GLIBC_DYNAMIC_LINKER per glibc upstreaming review comments:
http://lists.infradead.org/pipermail/linux-snps-arc/2017-June/002634.html

gcc/
	* config/arc/linux.h: GLIBC_DYNAMIC_LINKER update per glibc
	upstreaming review comments

From-SVN: r254866

gcc/ChangeLog

+2017-11-17  Vineet Gupta  <vgupta@synopsys.com>
+
+	* config/arc/linux.h: GLIBC_DYNAMIC_LINKER update per glibc
+	upstreaming review comments.
+
 2017-11-17  Tamar Christina  <tamar.christina@arm.com>
 
 	* expr.c (copy_blkmode_to_reg): Fix bitsize for targets

gcc/config/arc/linux.h

@@ -29,7 +29,7 @@ along with GCC; see the file COPYING3.  If not see
     }						\
   while (0)
 
-#define GLIBC_DYNAMIC_LINKER   "/lib/ld-linux.so.2"
+#define GLIBC_DYNAMIC_LINKER   "/lib/ld-linux-arc.so.2"
 #define UCLIBC_DYNAMIC_LINKER  "/lib/ld-uClibc.so.0"
 
 /* Note that the default is to link against dynamic libraries, if they are