ARC: switch GDB from "arc-2014.08" release to "development" branch

Signed-off-by: Alexey Brodkin <[email protected]>

Author: abrodkin

package/gdb/Config.in.host

@@ -52,7 +52,7 @@ config BR2_GDB_VERSION
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB
 	default "6.7.1-avr32-2.1.5" if BR2_GDB_VERSION_6_7_1_AVR32_2_1_5 || \
                                    (!BR2_PACKAGE_HOST_GDB && BR2_avr32)
-	default "arc-2014.08-gdb" if BR2_arc
+	default "arc-7.5-dev" if BR2_arc
 	default "6be65fb56ea6694a9260733a536a023a1e2d4d57" if BR2_microblaze
 	default "7.7.1"    if BR2_GDB_VERSION_7_7 || !BR2_PACKAGE_HOST_GDB
 	default "7.8"	   if BR2_GDB_VERSION_7_8