arm64: dts: qcom: mahua: Fix mahua bwmon

arm64: dts: qcom: mahua: Fix mahua bwmon

Delete the bwmon node that corresponds to non-existent cpu cluster 2
on Mahua SoCs.

Fixes: 598eedb21ddd ("arm64: dts: qcom: Add Mahua SoC and CRD")
Tested-by: Gopikrishna Garmidi <gopikrishna.garmidi@oss.qualcomm.com>
Signed-off-by: Pragnesh Papaniya <pragnesh.papaniya@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260325-bwmon_fixes-v1-2-9433f9d4c276@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>