ARM: dts: pxa300-raumfeld-speaker-one: add channel output mapping for STA320

These settings are needed to make the hardware operable.

Signed-off-by: Daniel Mack <[e-mail]>
Signed-off-by: Robert Jarzmik <[e-mail]>

arch/arm/boot/dts/pxa300-raumfeld-speaker-one.dts

···
 		st,invalid-input-detect-mute;
 		/* 2 (half-bridge) and 1 (full-bridge) on-board power */
 		st,output-conf = /bits/ 8 <0x1>;
+		st,ch1-output-mapping = /bits/ 8 <0>;
+		st,ch2-output-mapping = /bits/ 8 <1>;
+		st,ch3-output-mapping = /bits/ 8 <2>;
 		st,needs_esd_watchdog;
 	};
 };