[ARM] Update rootfs for Tizen armel (dotnet/coreclr#11202)

[ARM] Update rootfs for Tizen armel (dotnet/coreclr#11202)

* [ARM] Update cross rootfs for armel Tizen

Update cross rootfs for armel Tizen

Signed-off-by: Hyung-Kyu Choi <hk0110.choi@samsung.com>
* [ARM] Update cmake file and CI for armel Tizen

Update CI and cmake file for armel Tizen, because rootfs for Tizen is updated.
And rootfs for Tizen is embedded in Docker image for CI as Ubuntu for arm does.

Signed-off-by: Hyung-Kyu Choi <hk0110.choi@samsung.com>
Commit migrated from https://github.com/dotnet/coreclr/commit/a23cd5287f9be53f47c78cf99dfc114518a506d0