esp32: Update to latest ESP IDF.

dpgeorge · dpgeorge · commit 975df68fac18 · 2017-02-02T12:40:45.000+11:00
Only minor changes.  Main thing is that esptool.py is now compatible with
Python 3.
diff --git a/esp32/Makefile b/esp32/Makefile
@@ -29,7 +29,7 @@ ESPCOMP = $(ESPIDF)/components
 ESPTOOL ?= $(ESPCOMP)/esptool_py/esptool/esptool.py
 
 # verify the ESP IDF version
-ESPIDF_SUPHASH := 0865819cf9de5e7e7a032003db121cc801a3addd
+ESPIDF_SUPHASH := 0a678ebe8c8bb78053f2a2dc4bd26124adde9122
 ESPIDF_CURHASH := $(shell git -C $(ESPIDF) show --pretty=format:'%H')
 ifneq ($(ESPIDF_CURHASH),$(ESPIDF_SUPHASH))
 $(info ** WARNING **)
diff --git a/esp32/sdkconfig.h b/esp32/sdkconfig.h
@@ -41,6 +41,7 @@
 
 #define CONFIG_SECURE_BOOTLOADER_DISABLED 1
 #define CONFIG_NEWLIB_STDOUT_ADDCR 1
+#define CONFIG_PHY_ENABLED 1
 #define CONFIG_WIFI_ENABLED 1
 #define CONFIG_OPTIMIZATION_LEVEL_DEBUG 1
 #define CONFIG_MEMMAP_SMP 1
