arm64: dts: qcom: msm8992: Fix UART interrupt property

"interrupt" is not a valid property.

Fixes: 7f8bcc0c ("arm64: dts: qcom: msm8992: Add BLSP2_UART2 and I2C nodes")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200829111209.32685-1-krzk@kernel.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>