Reserve MR-TROPIC (#259)

Renamed Tropic Community (36) to distingush between MR-TROPIC (37)

Author: PetervdPerk-NXP

board_types.txt

@@ -79,7 +79,8 @@ Reserved "GUMSTIX [BL] FMU v6"         54
 Reserved "ARK CAN FLOW"                80
 Reserved "NXP ucans32k146"             34
 Reserved "NXP FMURT1170-V1"            35 # AKA PX4 FMU V6XRT
-Reserved "NXP Tropic"                  36
+Reserved "NXP TROPIC Community"        36
+Reserved "NXP MR-TROPIC"               37
 
 # values from external vendors
 EXT_HW_RADIOLINK_MINI_PIX               3