dtc has new checks for I2C buses. Fix the warnings in unit-addresses.

arch/arm/boot/dts/sun8i-a23-gt90h-v4.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun8i-a23-inet86dz.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun8i-a23-polaroid-mid2407pxe03.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun8i-a33-ga10h-v1.1.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: missing or empty reg property
arch/arm/boot/dts/sun8i-a33-ippo-q8h-v1.2.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: missing or empty reg property
arch/arm/boot/dts/sun8i-a33-q8-tablet.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2ac00/touchscreen@0: missing or empty reg property
arch/arm/boot/dts/sun5i-a13-utoo-p66.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2b000/touchscreen: I2C bus unit address format error, expected "40"
arch/arm/boot/dts/sun5i-a13-difrnce-dit4350.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2b000/touchscreen: missing or empty reg property
arch/arm/boot/dts/sun5i-a13-empire-electronix-m712.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2b000/touchscreen: missing or empty reg property
arch/arm/boot/dts/sun5i-a13-inet-98v-rev2.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2b000/touchscreen: missing or empty reg property
arch/arm/boot/dts/sun5i-a13-q8-tablet.dtb: Warning (i2c_bus_reg): /soc@1c00000/i2c@1c2b000/touchscreen: missing or empty reg property

Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>