dev: vadc: pm8x41: Fix header guard typo

Author: TravMurav

dev/pmic/pm8x41/include/pm_vadc_hc.h

@@ -27,7 +27,7 @@
  */
 
 #ifndef _PM_VADC_HC_H_
-#define PM_VADC_HC_H_
+#define _PM_VADC_HC_H_
 
 #include <sys/types.h>
 #include <bits.h>