stm32: Enable machine.CAN for CAN2.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: iabdalkader

ports/stm32/mpconfigport.h

@@ -123,7 +123,7 @@
 #define MICROPY_PY_MACHINE_BITSTREAM (1)
 #endif
 #ifndef MICROPY_PY_MACHINE_CAN
-#ifdef MICROPY_HW_CAN1_TX
+#if defined(MICROPY_HW_CAN1_TX) || defined(MICROPY_HW_CAN2_TX)
 #define MICROPY_PY_MACHINE_CAN (1)
 #else
 #define MICROPY_PY_MACHINE_CAN (0)