arm: dra7xx: Move fastboot options to defconfig

Now that fastboot options are available in Kconfig, we can migrate them
from DRA7 header to corresponding DRA7 defconfigs.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
3 files changed