docs: ABI: testing: sysfs-firmware-memmap: add some memmap types.

Compare with arch/x86/kernel/e820.c, types of memmap omitted some. So add.

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
Link: https://lore.kernel.org/r/20210623023126.104380-1-jianpeng.ma@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>