chrome: mount tmpfs on /dev/shm
chrome: mount tmpfs on /dev/shm

It is a bit bizarre but the convention nowadays is to mount
tmpfs on /dev/shm. If you don't do this chrome throws a
memory allocation error.

Signed-off-by: Ronald G. Minnich <f569d0af9a3481c4007b95c7180d6c41009f2513@gmail.com>

rminnich/u-root,hugelgupf/u-root,hugelgupf/u-root,GanShun/u-root,u-root/u-root,hugelgupf/u-root,GanShun/u-root,rminnich/u-root,GanShun/u-root,rminnich/u-root,rminnich/u-root,u-root/u-root,u-root/u-root,hugelgupf/u-root