poplar: Fix typo
poplar: Fix typo

Signed-off-by: Victor Chong <4aabb03bd6dd29c44a49684d87b08ac07e10b492@linaro.org>
Tested-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware