arm64: dts: qcom: sa8540p-ride: Document i2c busses

It isn't obvious in the current devicetree what is connected. Go ahead
and document what's on the other end.
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Eric Chanudet <echanude@redhat.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230130154823.117542-2-ahalaney@redhat.com

arch/arm64/boot/dts/qcom/sa8540p-ride.dts

@@ -317,6 +317,7 @@ &xo_board_clk {
 
 &tlmm {
 	i2c0_default: i2c0-default-state {
+		/* To USB7002T-I/KDXVA0 USB hub (SIP1 only) */
 		pins = "gpio135", "gpio136";
 		function = "qup0";
 		drive-strength = <2>;
@@ -324,6 +325,7 @@ i2c0_default: i2c0-default-state {
 	};
 
 	i2c1_default: i2c1-default-state {
+		/* To PM40028B-F3EI PCIe switch */
 		pins = "gpio158", "gpio159";
 		function = "qup1";
 		drive-strength = <2>;
@@ -331,6 +333,7 @@ i2c1_default: i2c1-default-state {
 	};
 
 	i2c12_default: i2c12-default-state {
+		/* To Maxim max20411 */
 		pins = "gpio0", "gpio1";
 		function = "qup12";
 		drive-strength = <2>;
@@ -338,6 +341,7 @@ i2c12_default: i2c12-default-state {
 	};
 
 	i2c15_default: i2c15-default-state {
+		/* To display connector (SIP1 only) */
 		pins = "gpio36", "gpio37";
 		function = "qup15";
 		drive-strength = <2>;
@@ -345,6 +349,7 @@ i2c15_default: i2c15-default-state {
 	};
 
 	i2c18_default: i2c18-default-state {
+		/* To ASM330LHH IMU (SIP1 only) */
 		pins = "gpio66", "gpio67";
 		function = "qup18";
 		drive-strength = <2>;