arm64: configs: tegra_android: Added IO Scheduler

arm64: configs: tegra_android: Added IO Scheduler

Enabled Deadline IO scheduler in kernel 4.9

- Deadline IO scheduler is only used by foster_e_hdd
   (set via foster_e_hdd.rc in userspace)
- Prior to Kernel 4.9, Deadline scheduler was enabled,
   when tegra21_defconfig was merged into tegra_android_defconfig,
   deadline scheduler was left out.
- This patch reverts deadline scheduler config to K3.10

bug 2425842

Change-Id: I2e352f6ad8572f584f09da3fe238d220cca15dc9
Signed-off-by: Angus Liu <angusl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1925718
(cherry picked from commit d471c39bc5e07bcbe855f8ada27c6eb760bd6f87)
Reviewed-on: https://git-master.nvidia.com/r/1935625
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>