DAIKIN: Update supported devices (#1808)

Add A/C unit & remote model info to known supported devices.
Replaces #1807

Author: danielpclin

src/ir_Daikin.h

@@ -44,6 +44,7 @@
 //   Brand: Daikin,  Model: DGS01 remote (DAIKIN64)
 //   Brand: Daikin,  Model: M Series A/C (DAIKIN)
 //   Brand: Daikin,  Model: FTXM-M A/C (DAIKIN)
+//   Brand: Daikin,  Model: ARC466A12 remote (DAIKIN)
 //   Brand: Daikin,  Model: ARC466A33 remote (DAIKIN)
 //   Brand: Daikin,  Model: FTWX35AXV1 A/C (DAIKIN64)
 //   Brand: Daikin,  Model: ARC484A4 remote (DAIKIN216)