ports/rp2: Enable split heap by default.

Enable split heap if PSRAM is enabled.

This allows both the internal SRAM and PSRAM to be used as heap.

Signed-off-by: Phil Howard <github@gadgetoid.com>

Author: Gadgetoid

ports/rp2/mpconfigport.h

@@ -82,7 +82,7 @@
 #define MICROPY_GC_STACK_ENTRY_TYPE             uint16_t
 #endif
 #ifndef MICROPY_GC_SPLIT_HEAP
-#define MICROPY_GC_SPLIT_HEAP                   (0) // whether PSRAM is added to or replaces the heap
+#define MICROPY_GC_SPLIT_HEAP                   MICROPY_HW_ENABLE_PSRAM // whether PSRAM is added to or replaces the heap
 #endif
 #define MICROPY_ALLOC_PATH_MAX                  (128)
 #define MICROPY_QSTR_BYTES_IN_HASH              (1)