hikey: add kernel config fragments for Secure Data Path

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

kconfigs/hikey.conf

 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_PINCTRL_SINGLE=y
+CONFIG_STAGING=y
+CONFIG_ION=y
+CONFIG_ION_DUMMY=y
+CONFIG_ION_DUMMY_UNMAPPED_HEAP=y
+CONFIG_ION_DUMMY_UNMAPPED_BASE=0x3e800000
+CONFIG_ION_DUMMY_UNMAPPED_SIZE=0x00400000
+CONFIG_ANDROID=y
+CONFIG_ANDROID_TIMED_OUTPUT=n
+CONFIG_ANDROID_LOW_MEMORY_KILLER=n