gcc/
	* config/xtensa/linux.h (TARGET_ASM_FILE_END): New macro.

libgcc/
	* config/xtensa/crti.S: Add .note.GNU-stack section on linux.
	* config/xtensa/crtn.S: Likewise.
	* config/xtensa/lib1funcs.S: Likewise.
	* config/xtensa/lib2funcs.S: Likewise.