buildroot: enable software floating point for MIPS64 targets

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36291 3c298f89-4303-0410-b956-a3cf2f4a3e73

Config.in

@@ -672,7 +672,7 @@ menuconfig TARGET_OPTIONS
 	config SOFT_FLOAT
 		bool "Use software floating point by default" if TARGET_OPTIONS
 		default y
-		depends on (arm || armeb || powerpc || mipsel || mips) && !HAS_FPU
+		depends on (arm || armeb || powerpc || mipsel || mips || mips64el || mips64) && !HAS_FPU
 		help
 		  If your target CPU does not have a Floating Point Unit (FPU) or a
 		  kernel FPU emulator, but you still wish to support floating point