Wrong definition for pins

Moreover it seems there is a pin numbering misalignement between the schematic
and the printed one on the connector.

Connector start at 22 while shcematics start a 23 (no 22 on the schematics)

Possible enhancement:
D77 could be removed
and
#define LCD_BL                  D77
could be set to D22


Signed-off-by: Frederic.Pillon <frederic.pillon@st.com>

Author: fpistm

variants/otto/variant.cpp

@@ -46,8 +46,8 @@ const PinName digital_arduino[] = {
   PB11, //D19
   PH5,  //D20
   PH4,  //D21
-  PE5,  //D22
-  PE6,  //D23
+  PJ3,  //D22
+  PG11, //D23
   PE2,  //D24
   PE4,  //D25
   PI8,  //D26