ARM: dts: qcom-msm8974: fix irq type on blsp2_uart1

IRQ_TYPE_NONE is invalid, so use the correct interrupt type.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Fixes: b05f82b1 ("ARM: dts: qcom: msm8974: Add blsp2_uart7 for bluetooth on sirius")
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220522083618.17894-1-luca@z3ntu.xyz