dts: bindings: Add aesc

aesc silicon is a startup focused on developing open-source
silicon solutions.

Link: https://github.com/aesc-silicon/ElemRV

Signed-off-by: Daniel Schultz <dnltz@aesc-silicon.de>

Author: dnltz

dts/bindings/vendor-prefixes.txt

@@ -33,6 +33,7 @@ adh	AD Holdings Plc.
 adi	Analog Devices, Inc.
 advantech	Advantech Corporation
 aeroflexgaisler	Aeroflex Gaisler AB
+aesc	Aesc Silicon
 aesop	AESOP Embedded Forum
 al	Annapurna Labs
 alcatel	Alcatel