Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h
index bb69d20..58592fa 100644
--- a/include/linux/led-lm3530.h
+++ b/include/linux/led-lm3530.h
@@ -41,7 +41,7 @@
 #define LM3530_RAMP_TIME_8s		(7)
 
 /* ALS Resistor Select */
-#define LM3530_ALS_IMPD_Z		(0x00) /* ALS Impedence */
+#define LM3530_ALS_IMPD_Z		(0x00) /* ALS Impedance */
 #define LM3530_ALS_IMPD_13_53kOhm	(0x01)
 #define LM3530_ALS_IMPD_9_01kOhm	(0x02)
 #define LM3530_ALS_IMPD_5_41kOhm	(0x03)