dt-bindings: Add vendor prefix for Evervision Electronics

Evervision Electronics is a panel manufacturer from Taipei.
http://www.evervisionlcd.com/index.php?lang=enSigned-off-by: NMarco Felsch <m.felsch@pengutronix.de>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416100645.21689-2-m.felsch@pengutronix.de

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -132,6 +132,7 @@ ettus	NI Ettus Research
 eukrea  Eukréa Electromatique
 everest	Everest Semiconductor Co. Ltd.
 everspin	Everspin Technologies, Inc.
+evervision	Evervision Electronics Co. Ltd.
 exar	Exar Corporation
 excito	Excito
 ezchip	EZchip Semiconductor