Add new sound pressure device class (#14592)

* Add sound pressure device class

* Update const.ts

* sort

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

src/common/const.ts

@@ -22,6 +22,7 @@ import {
   mdiCounter,
   mdiCurrentAc,
   mdiDatabase,
+  mdiEarHearing,
   mdiEye,
   mdiFan,
   mdiFlash,
@@ -162,6 +163,7 @@ export const FIXED_DEVICE_CLASS_ICONS = {
   pressure: mdiGauge,
   reactive_power: mdiFlash,
   signal_strength: mdiWifi,
+  sound_pressure: mdiEarHearing,
   speed: mdiSpeedometer,
   sulphur_dioxide: mdiMolecule,
   temperature: mdiThermometer,