Enable collections deque for CIRCUITPY_FULL_BUILD

I'd like to use `collections.deque`:

https://docs.circuitpython.org/en/latest/docs/library/collections.html#collections.deque

...on my RP2040-based Keybow 2040 (https://circuitpython.org/board/pimoroni_keybow2040/).

For MicroPython, `collections.deque` is enabled for all `rp2` devices,
because they all have `MICROPY_CONFIG_ROM_LEVEL` set to 'extra features':

https://github.com/micropython/micropython/blob/cf7d962cf38db296d1ac419fc4d5302b64c59644/ports/rp2/mpconfigport.h#L44

...which includes `MICROPY_PY_COLLECTIONS_DEQUE` (see
https://github.com/micropython/micropython/blob/6bda80d81147217a1d830b99b93d2e35d372e8f9/py/mpconfig.h#L1225-L1227 ).

For CircuitPython, it looks like `MICROPY_CONFIG_ROM_LEVEL` defaults to
'core' (`MICROPY_CONFIG_ROM_LEVEL_CORE_FEATURES`) and isn't updated
against any of the ports, so the only port getting `collections.deque`
is the `unix` port, which explcitly sets `MICROPY_PY_COLLECTIONS_DEQUE`:

https://github.com/adafruit/circuitpython/blob/6925a001382d41940ea9b412b1d1ba517d9880f9/ports/unix/mpconfigport.h#L134

At Dan Halbert's suggestion...

#6474 (comment)

... this commit enables `MICROPY_PY_COLLECTIONS_DEQUE` for all builds where
`CIRCUITPY_FULL_BUILD` is true - which includes Raspberry Pi:

https://github.com/adafruit/circuitpython/blob/6925a001382d41940ea9b412b1d1ba517d9880f9/ports/raspberrypi/mpconfigport.mk#L11

See also:

* #5734
* micropython@970eedc
  which originally added collections.deque to MicroPython

Author: rtyley

py/circuitpy_mpconfig.h

@@ -226,6 +226,9 @@ typedef long mp_off_t;
 #ifndef MICROPY_PY_COLLECTIONS_ORDEREDDICT
 #define MICROPY_PY_COLLECTIONS_ORDEREDDICT    (CIRCUITPY_FULL_BUILD)
 #endif
+#ifndef MICROPY_PY_COLLECTIONS_DEQUE
+#define MICROPY_PY_COLLECTIONS_DEQUE          (CIRCUITPY_FULL_BUILD)
+#endif
 #define MICROPY_PY_URE_MATCH_GROUPS           (CIRCUITPY_RE)
 #define MICROPY_PY_URE_MATCH_SPAN_START_END   (CIRCUITPY_RE)
 #define MICROPY_PY_URE_SUB                    (CIRCUITPY_RE)