Update variants/STM32L4xx/L4R5Z(G-I)Y_L4R9Z(G-I)Y_L4S5ZIY_L4S9ZIY/variant_SWAN_R5.h

Co-authored-by: Frederic Pillon <frederic.pillon@st.com>
Signed-off-by: Zachary J. Fields <zachary_fields@yahoo.com>

Author: zfields

variants/STM32L4xx/L4R5Z(G-I)Y_L4R9Z(G-I)Y_L4S5ZIY_L4S9ZIY/variant_SWAN_R5.h

@@ -236,12 +236,12 @@
   #define PIN_SERIAL_TX         PA9
 #endif
 
-// Default pin used for generic 'Serial2' instance
-#ifndef PIN_SERIAL2_RX
-  #define PIN_SERIAL2_RX        PC5
+// Default pin used for generic 'Serial3' instance
+#ifndef PIN_SERIAL3_RX
+  #define PIN_SERIAL3_RX        PC5
 #endif
-#ifndef PIN_SERIAL2_TX
-  #define PIN_SERIAL2_TX        PC4
+#ifndef PIN_SERIAL3_TX
+  #define PIN_SERIAL3_TX        PC4
 #endif
 
 // LPUART1