tf-a built with clang is bloated for rk3399 SOCs with 2.6+
it needs looking into, until then use gcc always to build it

Signed-off-by: Khem Raj <raj.khem@...>
Cc: Jon Mason <jon.mason@...>
Cc: Ross Burton <ross.burton@...>
---
.../trusted-firmware-a/trusted-firmware-a_%.bbappend | 7 +++++++
1 file changed, 7 insertions(+)