meta-aspeed: udev rules for vuart

Added 61-aspeed-vuart.rules with the AST2400/AST2500 VUART
udev rules.  Chose '61' because the basic serial support from
upstream is in '60'.

Fixes openbmc/openbmc#528.

Change-Id: Id7832bd3b421d6ffa6918e12654f9b74833384d6
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
2 files changed