fix: Use keysGetMaxTrims() instead of MAX_TRIMS (#3860)

* fix: use keysGetMaxTrims() instead of MAX_TRIMS

* feat: add support for virtual trims

This is necessary for radios like X-lite where half of the trims are simulated

radio/src/keys.cpp

@@ -316,8 +316,6 @@ static uint32_t transpose_trims()
 
 bool keysPollingCycle()
 {
-  uint32_t i;
-
   uint32_t trims_input;
   uint32_t keys_input = readKeys();
 
@@ -332,7 +330,7 @@ bool keysPollingCycle()
   trims_input = readTrims();
 #endif
 
-  for (i = 0; i < MAX_KEYS; i++) {
+  for (int i = 0; i < keysGetMaxKeys(); i++) {
     event_t evt = keys[i].input(keys_input & (1 << i));
     if (evt) {
       if (i != KEY_SHIFT && evt != _MSK_KEY_REPT) {
@@ -341,7 +339,8 @@ bool keysPollingCycle()
     }
   }
 
-  for (i = 0; i < MAX_TRIMS * 2; i++) {
+  auto trim_switches = keysGetMaxTrims() * 2;
+  for (int i = 0; i < trim_switches; i++) {
     event_t evt = trim_keys[i].input(trims_input & (1 << i));
     if (evt) pushTrimEvent(evt | i);
   }