arm64: dts: qcom: qcs6490-rb3gen2: Specify i2c1 clock frequency

arm64: dts: qcom: qcs6490-rb3gen2: Specify i2c1 clock frequency

Per the binding, omitting the clock frequency from a Geni I2C controller
node defaults the bus to 100Khz. But at least in Linux, a friendly info
print highlights the lack of explicitly defined frequency in the
DeviceTree.

Specify the frequency, to give it an explicit value, and to silence the
log print in Linux.

Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20241004-i2c1-frequency-v1-1-77a359015d54@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>