make dtbs_check currently reports the following errors
with qrb5165-rb5 led nodes:

arch/arm64/boot/dts/qcom/qrb5165-rb5.dtb:
 leds: 'bt', 'user4', 'wlan' do not match any of the regexes:
  '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+'

Fix the same.

Also while at it, fix a blank line issue in the led
node.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220719205058.1004942-3-bhupesh.sharma@linaro.org