esp8266: Enable and freeze uasyncio.

Only included in GENERIC build.

ports/esp8266/boards/GENERIC/manifest.py

@@ -0,0 +1,2 @@
+include("$(PORT_DIR)/boards/manifest.py")
+include("$(MPY_DIR)/extmod/uasyncio/manifest.py")

ports/esp8266/boards/GENERIC/mpconfigboard.h

@@ -15,6 +15,7 @@
 #define MICROPY_PY_ALL_SPECIAL_METHODS  (1)
 #define MICROPY_PY_IO_FILEIO            (1)
 #define MICROPY_PY_SYS_STDIO_BUFFER     (1)
+#define MICROPY_PY_UASYNCIO             (1)
 #define MICROPY_PY_URE_SUB              (1)
 #define MICROPY_PY_UCRYPTOLIB           (1)
 #define MICROPY_PY_FRAMEBUF             (1)

ports/esp8266/boards/GENERIC/mpconfigboard.mk

@@ -1 +1,3 @@
 MICROPY_VFS_FAT = 1
+
+FROZEN_MANIFEST ?= $(BOARD_DIR)/manifest.py

ports/esp8266/boards/manifest_release.py

@@ -6,10 +6,6 @@ freeze("$(MPY_DIR)/drivers/display", "ssd1306.py")
 # file utilities
 freeze("$(MPY_LIB_DIR)/upysh", "upysh.py")
 
-# uasyncio
-freeze("$(MPY_LIB_DIR)/uasyncio", "uasyncio/__init__.py")
-freeze("$(MPY_LIB_DIR)/uasyncio.core", "uasyncio/core.py")
-
 # requests
 freeze("$(MPY_LIB_DIR)/urequests", "urequests.py")
 freeze("$(MPY_LIB_DIR)/urllib.urequest", "urllib/urequest.py")