ARM: dts: BCM5301X: Relicense Felix's code to the GPL 2.0+ / MIT

ARM: dts: BCM5301X: Relicense Felix's code to the GPL 2.0+ / MIT

Move code added by Felix to the bcm-ns.dtsi which uses dual licensing.
That syncs more Northstar code to be based on the same licensing schema.

This code was added in the commit 1ff80363524c ("ARM: BCM5301X: Add
profiling support").

Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230916083057.10458-1-zajec5@gmail.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>