Align ChibiOS I2C defs with other drivers (#14399)

* Align ChibiOS I2C defs with other drivers

* Update keyboards/xelus/valor_frl_tkl/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/handwired/onekey/blackpill_f401/blackpill_f401.c

@@ -17,7 +17,7 @@
 #include QMK_KEYBOARD_H
 
 void board_init(void) {
-    // B9 is configured as I2C1_SDA in the board file; that function must be
+    // B9 is configured as I2C1_SDA_PIN in the board file; that function must be
     // disabled before using B7 as I2C1_SDA.
     setPinInputHigh(B9);
 }