bcm27xx: update device definitions for 6.18
Synchronize the device definitions with the current rpi-6.18.y kernel tree.
Add newly introduced DTBs, update supported device identifiers, and
refresh the displayed model names to reflect the supported hardware.
Retain legacy SUPPORTED_DEVICES aliases where necessary to preserve
sysupgrade compatibility.
Signed-off-by: Joshua Covington <joshuacov@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23703
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>