recipes-kernel/linux: Change variables for kernel image name/symlink
recipes-kernel/linux: Change variables for kernel image name/symlink

Recently that variables was renamed,

http://git.openembedded.org/openembedded-core/commit/?id=f952c8e08b4798aa0f8bf764cfd70bda0eae9b8b

Signed-off-by: Aníbal Limón <4676e39632f2bd46f30a0e877949547c228033d4@linaro.org>

ndechesne/meta-qcom,ndechesne/meta-qcom,ndechesne/meta-qualcomm,ndechesne/meta-qcom