fw-pkg-...	firmware header files in new (package) format
		as used for firmware download class too for
		static include
fw-empty.h	empty static firmware header used when fw is
		downloaded from user space
fw-...		old firmware files (needed by gen_fw.c to
		generate the new, binary fw files)
at76c50[35]-*fw binary firmware files for download from user space
gen_fw.c	C program to generate at76c50[35]-*fw files
		from fw-* files