Fix 2.14.90.0.8 / 2.15 selection.

toolchain/binutils/Config.in

@@ -48,7 +48,8 @@ config BR2_BINUTILS_VERSION
 	string
 	default "2.14.90.0.6"     if BR2_BINUTILS_VERSION_2_14_90_0_6
 	default "2.14.90.0.7"     if BR2_BINUTILS_VERSION_2_14_90_0_7
-	default "2.15.90.0.8"     if BR2_BINUTILS_VERSION_2_15
+	default "2.14.90.0.8"     if BR2_BINUTILS_VERSION_2_14_90_0_8
+	default "2.15"            if BR2_BINUTILS_VERSION_2_15
 	default "2.15.90.0.1"     if BR2_BINUTILS_VERSION_2_15_90_0_1
 	default "2.15.90.0.0.1.1" if BR2_BINUTILS_VERSION_2_15_90_0_1_1
 	default "2.15.90.0.2"     if BR2_BINUTILS_VERSION_2_15_90_0_2