libphidget: needs dynamic library support

Fixes:
http://autobuild.buildroot.net/results/932/9322c930a545bb500b5193a84b26895a03a6b7f7/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libphidget/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_LIBPHIDGET
 	bool "libphidget"
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb
+	depends on !BR2_PREFER_STATIC_LIB
 	select BR2_PACKAGE_LIBUSB
 	help
 	  The libphidget library provides an API for controlling Phidgets
@@ -20,5 +21,6 @@ config BR2_PACKAGE_LIBPHIDGET
 
 	  http://phidgets.com/
 
-comment "libphidget needs a toolchain w/ threads"
+comment "libphidget needs a toolchain w/ threads, dynamic library"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_PREFER_STATIC_LIB

package/phidgetwebservice/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_PHIDGETWEBSERVICE
 	bool "phidgetwebservice"
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb, libphidget
+	depends on !BR2_PREFER_STATIC_LIB # libphidget
 	select BR2_PACKAGE_LIBPHIDGET
 	help
           phidgetwebservice (the Phidget WebService) provides an HTTP
@@ -15,5 +16,6 @@ config BR2_PACKAGE_PHIDGETWEBSERVICE
 
 	  http://phidgets.com/
 
-comment "phidgetwebservice needs a toolchain w/ threads"
+comment "phidgetwebservice needs a toolchain w/ threads, dynamic library"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_PREFER_STATIC_LIB