boards: ti: lp_em_cc2340r5: Add pinctrl support for PWM

For each available LGPT PWM channel is selected one PWM
capable pin.

Signed-off-by: Stoyan Bogdanov <[email protected]>

Author: bogdanovs

boards/ti/lp_em_cc2340r5/lp_em_cc2340r5-pinctrl.dtsi

@@ -78,4 +78,60 @@
 		bias-disable;
 		input-enable;
 	};
+
+	/* LGPT0 - PWM */
+	pwm0_default: lgpt0_chan0_default {
+		pinmux = <8 DIO8_T0_C0N>;
+		bias-disable;
+	};
+	pwm1_default: lgpt0_chan1_default {
+		pinmux = <3 DIO3_T0_C1N>;
+		bias-disable;
+	};
+	pwm2_default: lgpt0_chan2_default {
+		pinmux = <4 DIO4_T0_C2N>;
+		bias-disable;
+	};
+
+	/* LGPT1 - PWM */
+	pwm3_default: lgpt1_chan0_default {
+		pinmux = <16 DIO16_T1_C0N>;
+		bias-disable;
+	};
+	pwm4_default: lgpt1_chan1_default {
+		pinmux = <17 DIO17_T1_C1N>;
+		bias-disable;
+	};
+	pwm5_default: lgpt1_chan2_default {
+		pinmux = <14 DIO14_T1_C2N>;
+		bias-disable;
+	};
+
+	/* LGPT2 - PWM */
+	pwm6_default: lgpt2_chan0_default {
+		pinmux = <15 DIO15_T2_C0N>;
+		bias-disable;
+	};
+	pwm7_default: lgpt2_chan1_default {
+		pinmux = <2 DIO2_T2_C1N>;
+		bias-disable;
+	};
+	pwm8_default: lgpt2_chan2_default {
+		pinmux = <25 DIO25_T2_C2N>;
+		bias-disable;
+	};
+
+	/* LGPT3 - PWM */
+	pwm9_default: lgpt3_chan0_default {
+		pinmux = <10 DIO10_T3_C0N>;
+		bias-disable;
+	};
+	pwm10_default: lgpt3_chan1_default {
+		pinmux = <22 DIO22_T3_C1N>;
+		bias-disable;
+	};
+	pwm11_default: lgpt3_chan2_default {
+		pinmux = <23 DIO23_T3_C2N>;
+		bias-disable;
+	};
 };