fix nrf51822 i2c & spi conflict

Dependencies:   BLE_API eMPL_MPU6050 nRF51822

Fork of Seeed_Tiny_BLE_Flash by Darren Huang

Revision:
3:24e365bd1b97
Parent:
1:fc2f9d636751
--- a/BLE_API.lib	Thu Nov 05 02:46:37 2015 +0000
+++ b/BLE_API.lib	Thu Nov 05 06:58:30 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#8a104d9d80c1
+http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#a097e1be76f4