arm64: dts: amlogic: c3: fix dtbcheck warning

arm64: dts: amlogic: c3: fix dtbcheck warning

Fix warning when use W=1 to build dtb, as following error:

arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi:65.7-76.4: Warning
(unit_address_vs_reg): /sram: node has a reg or ranges property,
but no unit name

arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi:168.34-413.6: Warning
(unit_address_vs_reg): /soc/bus@fe000000/pinctrl@4000: node has a
unit name, but no reg or ranges property

arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi:168.34-413.6: Warning
(simple_bus_reg): /soc/bus@fe000000/pinctrl@4000: missing or empty
reg/ranges property

arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409.dts:205.9-245.4:
Warning (avoid_unnecessary_addr_size): /soc/bus@fe000000/spi@56000
/nand@0: unnecessary #address-cells/#size-cells without "ranges",
"dma-ranges" or child "reg" property

Fixes: d4bd8f3023b6 ("arm64: dts: amlogic: add C3 AW419 board")
Fixes: 520b792e8317 ("arm64: dts: amlogic: add some device nodes for C3")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202409010005.A7tSzgEn-lkp@intel.com/
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://lore.kernel.org/r/20240902-fix_warning-v1-1-037029c584fc@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>