[ARM] Re-enable armel CI
[ARM] Re-enable armel CI

Because armel uses different implementation compared to armlb,
let's reenable armel CI.

Signed-off-by: Hyung-Kyu Choi <b24f6a1d8ab6a697998e8a2c60eb031a02db5070@samsung.com>

mmitche/coreclr,cshung/coreclr,wateret/coreclr,mmitche/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,krk/coreclr,wtgodbe/coreclr,cshung/coreclr,yizhang82/coreclr,wateret/coreclr,poizan42/coreclr,poizan42/coreclr,yizhang82/coreclr,yizhang82/coreclr,wateret/coreclr,wtgodbe/coreclr,yizhang82/coreclr,poizan42/coreclr,JosephTremoulet/coreclr,poizan42/coreclr,wateret/coreclr,krk/coreclr,wateret/coreclr,wtgodbe/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,wtgodbe/coreclr,ruben-ayrapetyan/coreclr,ruben-ayrapetyan/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,yizhang82/coreclr,krk/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,krk/coreclr,JosephTremoulet/coreclr,wtgodbe/coreclr,mmitche/coreclr,wateret/coreclr,JosephTremoulet/coreclr,poizan42/coreclr,cshung/coreclr,wtgodbe/coreclr,krk/coreclr,JosephTremoulet/coreclr,cshung/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,yizhang82/coreclr