ARM: dts: stm32: Disable optional TSC2004 on DRC02 board

The DRC02 has no use for the on-SoM touchscreen controller, and the
on-SoM touchscreen controller may not even be populated, which then
results in error messages in kernel log. Disable the touchscreen
controller in DT.

Fixes: fde180f0 ("ARM: dts: stm32: Add DHSOM based DRC02 board")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/stm32mp15xx-dhcom-drc02.dtsi

@@ -87,6 +87,12 @@ eeprom@50 {
 	};
 };
 
+&i2c4 {
+	touchscreen@49 {
+		status = "disabled";
+	};
+};
+
 &i2c5 {	/* TP7/TP8 */
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c5_pins_a>;