Improve naming

src/main.ino

@@ -197,7 +197,7 @@ void blink_speaker_frame(int divisor)
 // Each frame, this increments L/R/B hold time variables while the user is holding a button (or both) down.
 // It also checks for the release. In that case it flips on either input_single_* or input_hold_* variables
 // to be consumed later in the frame.
-void read_dual_buttons()
+void read_buttons()
 {
   for (int i = 0; i < num_ui_actions; i++) {
     input_single_hit[i] = false;
@@ -245,7 +245,7 @@ void read_dual_buttons()
 
 void set_up_mode()
 {
-  read_dual_buttons();
+  read_buttons();
 
   if (input_hold_hit[btn_grip_both])
   {