[source] malta: add 64 bit qemu commands to README

[LEDE Commits]

hauke pushed a commit to source.git, branch master:
https://git.lede-project.org/8fa9b2ce89025d245a816a38fe21c8c4f58e34e4

commit 8fa9b2ce89025d245a816a38fe21c8c4f58e34e4
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Sun Oct 15 14:18:40 2017 +0200

    malta: add 64 bit qemu commands to README
    
    This shows how to boot up the 64 bit images.
    
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 target/linux/malta/README | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/target/linux/malta/README b/target/linux/malta/README
index c34afe1..e486659 100644
--- a/target/linux/malta/README
+++ b/target/linux/malta/README
@@ -4,10 +4,16 @@ troubleshoot MIPS applications without access to real hardware.
 
 To use the images built by OpenWrt with qemu, use the following commands:
 
-For the little-endian image:
+For the 32 bit little-endian image:
 qemu-system-mipsel -kernel bin/targets/malta/le/lede-malta-le-vmlinux-initramfs.elf -nographic -m 256
 
-For the big-endian image:
+For the 32 bit big-endian image:
 qemu-system-mips -kernel bin/targets/malta/be/lede-malta-be-vmlinux-initramfs.elf -nographic -m 256
 
+For the 64 bit little-endian image:
+qemu-system-mips64el -kernel bin/targets/malta/le64/lede-malta-le64-vmlinux-initramfs.elf -nographic -m 256
+
+For the 64 bit big-endian image:
+qemu-system-mips64 -kernel bin/targets/malta/be64/lede-malta-be64-vmlinux-initramfs.elf -nographic -m 256
+
 and enjoy the system bootin.