gcc: switch to gcc 4.9 as the default version

Now that we have added gcc 5.1, it's time to make gcc 4.9 the default
version used in Buildroot.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gcc/Config.in.host

@@ -9,8 +9,7 @@ config BR2_GCC_SUPPORTS_GRAPHITE
 choice
 	prompt "GCC compiler Version"
 	default BR2_GCC_VERSION_4_8_ARC if BR2_arc
-	default BR2_GCC_VERSION_4_9_X if BR2_microblaze || BR2_powerpc64le
-	default BR2_GCC_VERSION_4_8_X
+	default BR2_GCC_VERSION_4_9_X
 	help
 	  Select the version of gcc you wish to use.