hwdb: add PCPanel controllers

PCPanel makes USB desktop controllers (knobs, sliders, buttons) used to
control audio levels, streaming software and lighting. They are driven
from userspace through hidraw, like the other controllers in this file.

PCPanel reuses the vendor IDs of the microcontroller makers
(STMicroelectronics 0483, Microchip 04d8) with its own product IDs.

hwdb.d/70-av-production.hwdb

@@ -253,6 +253,21 @@ usb:v17CCp1130*
 usb:v17CCp2420*
  ID_AV_PRODUCTION_CONTROLLER=1
 
+####################
+# PCPanel
+####################
+# PCPanel Mini
+usb:v0483pA3C4*
+ ID_AV_PRODUCTION_CONTROLLER=1
+
+# PCPanel Pro
+usb:v0483pA3C5*
+ ID_AV_PRODUCTION_CONTROLLER=1
+
+# PCPanel RGB
+usb:v04D8pEB52*
+ ID_AV_PRODUCTION_CONTROLLER=1
+
 ####################
 # Pioneer
 ####################