Updated Kconfig files from Lzyy

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4569 42af7a65-404d-4744-a932-0658087f49c3

libxx/Kconfig

@@ -2,3 +2,18 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+config HAVE_CXX
+	bool "have cxx"
+	default n
+	---help---
+		toolchain supports C++ and CXX, CXXFLAGS, and
+		COMPILEXX have been defined in the configurations Make.defs
+		file.
+
+config HAVE_CXXINITIALIZE
+	bool "have cxx initialize"
+	default n
+	---help---
+		The platform-specific logic includes support
+		for initialization of static C++ instances for this architecture
+		and for the selected toolchain (via up_cxxinitialize()).