Fix Bitposition funtion (#8739)
Fix Bitposition funtion (#8739)

Fix Bitposition(value) function implementation to check platform, not target.
- cross-architecture component build error for ARM32/linux
yeaicc/coreclr,JosephTremoulet/coreclr,wtgodbe/coreclr,James-Ko/coreclr,mskvortsov/coreclr,mmitche/coreclr,parjong/coreclr,cshung/coreclr,poizan42/coreclr,wateret/coreclr,James-Ko/coreclr,wtgodbe/coreclr,tijoytom/coreclr,ragmani/coreclr,mmitche/coreclr,poizan42/coreclr,wateret/coreclr,dpodder/coreclr,krk/coreclr,russellhadley/coreclr,sjsinju/coreclr,dpodder/coreclr,kyulee1/coreclr,dpodder/coreclr,ruben-ayrapetyan/coreclr,alexperovich/coreclr,ruben-ayrapetyan/coreclr,jamesqo/coreclr,yeaicc/coreclr,ruben-ayrapetyan/coreclr,gkhanna79/coreclr,hseok-oh/coreclr,JonHanna/coreclr,wtgodbe/coreclr,JonHanna/coreclr,hseok-oh/coreclr,qiudesong/coreclr,sjsinju/coreclr,mmitche/coreclr,sagood/coreclr,tijoytom/coreclr,jamesqo/coreclr,cmckinsey/coreclr,sjsinju/coreclr,AlexGhiondea/coreclr,krk/coreclr,James-Ko/coreclr,russellhadley/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,cmckinsey/coreclr,parjong/coreclr,cmckinsey/coreclr,alexperovich/coreclr,pgavlin/coreclr,jamesqo/coreclr,James-Ko/coreclr,mskvortsov/coreclr,JonHanna/coreclr,pgavlin/coreclr,poizan42/coreclr,wtgodbe/coreclr,cshung/coreclr,rartemev/coreclr,gkhanna79/coreclr,neurospeech/coreclr,cydhaselton/coreclr,AlexGhiondea/coreclr,wateret/coreclr,krytarowski/coreclr,AlexGhiondea/coreclr,yizhang82/coreclr,alexperovich/coreclr,alexperovich/coreclr,kyulee1/coreclr,yeaicc/coreclr,sagood/coreclr,YongseopKim/coreclr,parjong/coreclr,cmckinsey/coreclr,qiudesong/coreclr,ruben-ayrapetyan/coreclr,cydhaselton/coreclr,wateret/coreclr,James-Ko/coreclr,krytarowski/coreclr,russellhadley/coreclr,JonHanna/coreclr,JosephTremoulet/coreclr,poizan42/coreclr,tijoytom/coreclr,hseok-oh/coreclr,poizan42/coreclr,pgavlin/coreclr,YongseopKim/coreclr,ragmani/coreclr,dpodder/coreclr,sagood/coreclr,yizhang82/coreclr,jamesqo/coreclr,gkhanna79/coreclr,sagood/coreclr,botaberg/coreclr,mskvortsov/coreclr,gkhanna79/coreclr,hseok-oh/coreclr,ragmani/coreclr,wateret/coreclr,AlexGhiondea/coreclr,yeaicc/coreclr,yizhang82/coreclr,dpodder/coreclr,rartemev/coreclr,wateret/coreclr,rartemev/coreclr,gkhanna79/coreclr,krk/coreclr,yeaicc/coreclr,sjsinju/coreclr,alexperovich/coreclr,YongseopKim/coreclr,cydhaselton/coreclr,russellhadley/coreclr,krytarowski/coreclr,parjong/coreclr,alexperovich/coreclr,cmckinsey/coreclr,YongseopKim/coreclr,cydhaselton/coreclr,ruben-ayrapetyan/coreclr,pgavlin/coreclr,mmitche/coreclr,YongseopKim/coreclr,parjong/coreclr,qiudesong/coreclr,krk/coreclr,jamesqo/coreclr,mskvortsov/coreclr,dpodder/coreclr,cshung/coreclr,sjsinju/coreclr,neurospeech/coreclr,yizhang82/coreclr,krk/coreclr,poizan42/coreclr,qiudesong/coreclr,botaberg/coreclr,krytarowski/coreclr,sjsinju/coreclr,AlexGhiondea/coreclr,yizhang82/coreclr,rartemev/coreclr,jamesqo/coreclr,kyulee1/coreclr,ragmani/coreclr,mskvortsov/coreclr,neurospeech/coreclr,botaberg/coreclr,pgavlin/coreclr,kyulee1/coreclr,cshung/coreclr,mmitche/coreclr,russellhadley/coreclr,yeaicc/coreclr,rartemev/coreclr,JosephTremoulet/coreclr,JosephTremoulet/coreclr,JosephTremoulet/coreclr,krytarowski/coreclr,qiudesong/coreclr,qiudesong/coreclr,JonHanna/coreclr,wtgodbe/coreclr,parjong/coreclr,tijoytom/coreclr,ragmani/coreclr,gkhanna79/coreclr,neurospeech/coreclr,cshung/coreclr,hseok-oh/coreclr,rartemev/coreclr,ragmani/coreclr,pgavlin/coreclr,krytarowski/coreclr,botaberg/coreclr,James-Ko/coreclr,cmckinsey/coreclr,krk/coreclr,kyulee1/coreclr,mskvortsov/coreclr,hseok-oh/coreclr,cshung/coreclr,botaberg/coreclr,tijoytom/coreclr,sagood/coreclr,AlexGhiondea/coreclr,sagood/coreclr,russellhadley/coreclr,tijoytom/coreclr,YongseopKim/coreclr,kyulee1/coreclr,cydhaselton/coreclr,wtgodbe/coreclr,yizhang82/coreclr,JosephTremoulet/coreclr,JonHanna/coreclr,botaberg/coreclr,neurospeech/coreclr,yeaicc/coreclr,cydhaselton/coreclr,cmckinsey/coreclr,neurospeech/coreclr