Hide CAN options, if CAN support is disabled

can/config.in

@@ -1,5 +1,6 @@
 dep_bool_menu "CAN bus support" CAN_SUPPORT y
 
+if [ "$CAN_SUPPORT" = "y" ]; then
    bool 'Use MCU builtin SPI support' SPI_HARDWARE
 
    choice 'SPI Port'			\
@@ -55,6 +56,7 @@ choice 'Bit SS'			\
 
    dep_bool_menu "Use interrupt" CAN_INTERRUPT y
 
+   if [ "$CAN_INTERRUPT" = "y" ]; then
       choice 'Interrupt Port'			\
          "PINA  PINA \
           PINB  PINB \
@@ -72,7 +74,7 @@ choice 'Interrupt Bit'			\
           Bit6 6 \
           Bit7 7" \
          'Bit2' SPI_PIN_MCP_INT
-
+   fi
    endmenu
-
+fi
 endmenu