maint_print_c_tdesc_cmd: Use type for TYPE_CODE_FLAGS instead of field_type.

gdb/ChangeLog:

	* target-descriptions.c (maint_print_c_tdesc_cmd): Use "type" for
	TYPE_CODE_FLAGS instead of "field_type", for consistency.
	* features/i386/amd64-avx-linux.c: Regenerate.
	* features/i386/amd64-avx.c: Regenerate.
	* features/i386/amd64-avx512-linux.c: Regenerate.
	* features/i386/amd64-avx512.c: Regenerate.
	* features/i386/amd64-linux.c: Regenerate.
	* features/i386/amd64-mpx-linux.c: Regenerate.
	* features/i386/amd64-mpx.c: Regenerate.
	* features/i386/amd64.c: Regenerate.
	* features/i386/i386-avx-linux.c: Regenerate.
	* features/i386/i386-avx.c: Regenerate.
	* features/i386/i386-avx512-linux.c: Regenerate.
	* features/i386/i386-avx512.c: Regenerate.
	* features/i386/i386-linux.c: Regenerate.
	* features/i386/i386-mmx-linux.c: Regenerate.
	* features/i386/i386-mmx.c: Regenerate.
	* features/i386/i386-mpx-linux.c: Regenerate.
	* features/i386/i386-mpx.c: Regenerate.
	* features/i386/i386.c: Regenerate.
	* features/i386/x32-avx-linux.c: Regenerate.
	* features/i386/x32-avx.c: Regenerate.
	* features/i386/x32-avx512-linux.c: Regenerate.
	* features/i386/x32-avx512.c: Regenerate.
	* features/i386/x32-linux.c: Regenerate.
	* features/i386/x32.c: Regenerate.