arm64: dts: qcom: db410c: Fix Bluetooth LED trigger

[ Upstream commit e53db018315b7660bb7000a29e79faff2496c2c2 ]

Current LED trigger, 'bt', is not known/used by any existing driver.
Fix this by renaming it to 'bluetooth-power' trigger which is
controlled by the Bluetooth subsystem.

Fixes: 9943230c ("arm64: dts: qcom: Add apq8016-sbc board LED's related device nodes")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>