Add the missing short interrupt. This fixes the schema warning:

wled@d800: interrupt-names: ['ovp'] is too short

Fixes: 7b56a804 ("arm64: dts: qcom: pm660l: Add WLED support")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230626-topic-bindingsfixups-v1-4-254ae8642e69@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>