arm64: dts: imx8mm/n-beacon-kit: Fix the order of ADV7535 reg entries

arm64: dts: imx8mm/n-beacon-kit: Fix the order of ADV7535 reg entries

According to adi,adv7533.yaml, the order for the reg and reg-names entries
must be: main, edid, cec, and packet.

Fix it accordingly to remove the following dt-schema warnings:

hdmi@3d: reg-names:1: 'edid' was expected
hdmi@3d: reg-names:2: 'cec' was expected

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>