qt: needs MMU (fork)

Fixes
http://autobuild.buildroot.net/results/4f7/4f744595efceba2d5a54151bf5f1802eb1268fac/

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/opencv/Config.in

@@ -169,6 +169,7 @@ config BR2_PACKAGE_OPENCV_WITH_QT
 	bool "qt backend support"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on !BR2_avr32 # qt
+	depends on BR2_USE_MMU # qt
 	select BR2_PACKAGE_QT
 	select BR2_PACKAGE_QT_STL
 	default y

package/openpowerlink/Config.in

@@ -1,4 +1,5 @@
 comment "openpowerlink needs a toolchain w/ C++, threads"
+	depends on BR2_USE_MMU
 	depends on BR2_i386 || BR2_x86_64
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
 
@@ -7,6 +8,7 @@ config BR2_PACKAGE_OPENPOWERLINK
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_i386 || BR2_x86_64
+	depends on BR2_USE_MMU # qt
 	help
 	  openPOWERLINK is an Open Source Industrial Ethernet
 	  stack implementing the POWERLINK protocol for Managing Node

package/qt/Config.in

@@ -1,10 +1,12 @@
 comment "qt needs a toolchain w/ C++, threads"
 	depends on !BR2_avr32
+	depends on BR2_USE_MMU
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
 
 menuconfig BR2_PACKAGE_QT
 	bool "Qt"
 	depends on !BR2_avr32 # lacks TLS
+	depends on BR2_USE_MMU # fork
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	help