dt-bindings: vendor-prefixes: Add an entry for AmpereComputing.com

Add "ampere" entry for Ampere Computing LLC: amperecomputing.com

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Signed-off-by: Phong Vo <phong@os.amperecomputing.com>
Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20201208043700.23098-2-quan@os.amperecomputing.com


Signed-off-by: Rob Herring <robh@kernel.org>