scripts: turn off some new dtc warnings by default

The latest dtc update adds some new noisy warnings, so turn them off by
default. Disable 'avoid_unnecessary_addr_size' and 'alias_paths'. They
can be re-enabled by building with 'W=1'.

Signed-off-by: Rob Herring <robh@kernel.org>

Author: robherring

scripts/Makefile.lib

@@ -277,6 +277,8 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
 	-Wno-unit_address_format \
 	-Wno-pci_bridge \
 	-Wno-pci_device_bus_num \
+	-Wno-avoid_unnecessary_addr_size \
+	-Wno-alias_paths \
 	-Wno-pci_device_reg
 endif