Fix cross component builderror - CMakeLists.txt for PAL (#9819)
Fix cross component builderror - CMakeLists.txt for PAL (#9819)

define & use PAL_ARCH_SOURCES_DIR in PAL CMakeLists.txt to build assembly based on platform architecture.
root/CMakeLists.txt defines ARCH_SOURCES_DIR based on target architecture.
mskvortsov/coreclr,wtgodbe/coreclr,JosephTremoulet/coreclr,dpodder/coreclr,krk/coreclr,wtgodbe/coreclr,mskvortsov/coreclr,YongseopKim/coreclr,yizhang82/coreclr,cmckinsey/coreclr,rartemev/coreclr,russellhadley/coreclr,yeaicc/coreclr,JosephTremoulet/coreclr,JonHanna/coreclr,gkhanna79/coreclr,krk/coreclr,rartemev/coreclr,sjsinju/coreclr,wateret/coreclr,gkhanna79/coreclr,ragmani/coreclr,qiudesong/coreclr,AlexGhiondea/coreclr,James-Ko/coreclr,qiudesong/coreclr,pgavlin/coreclr,dpodder/coreclr,tijoytom/coreclr,cshung/coreclr,botaberg/coreclr,mmitche/coreclr,ruben-ayrapetyan/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,James-Ko/coreclr,James-Ko/coreclr,jamesqo/coreclr,mskvortsov/coreclr,AlexGhiondea/coreclr,krk/coreclr,krytarowski/coreclr,YongseopKim/coreclr,JonHanna/coreclr,yeaicc/coreclr,poizan42/coreclr,jamesqo/coreclr,JosephTremoulet/coreclr,pgavlin/coreclr,jamesqo/coreclr,alexperovich/coreclr,AlexGhiondea/coreclr,sagood/coreclr,kyulee1/coreclr,sjsinju/coreclr,jamesqo/coreclr,AlexGhiondea/coreclr,alexperovich/coreclr,jamesqo/coreclr,krytarowski/coreclr,tijoytom/coreclr,cshung/coreclr,yeaicc/coreclr,qiudesong/coreclr,rartemev/coreclr,mskvortsov/coreclr,dpodder/coreclr,russellhadley/coreclr,James-Ko/coreclr,AlexGhiondea/coreclr,botaberg/coreclr,russellhadley/coreclr,James-Ko/coreclr,gkhanna79/coreclr,botaberg/coreclr,krk/coreclr,wtgodbe/coreclr,sagood/coreclr,cmckinsey/coreclr,poizan42/coreclr,botaberg/coreclr,poizan42/coreclr,yeaicc/coreclr,sagood/coreclr,rartemev/coreclr,ragmani/coreclr,gkhanna79/coreclr,sjsinju/coreclr,wateret/coreclr,parjong/coreclr,pgavlin/coreclr,cydhaselton/coreclr,JonHanna/coreclr,ragmani/coreclr,dpodder/coreclr,cydhaselton/coreclr,cmckinsey/coreclr,wateret/coreclr,JonHanna/coreclr,mskvortsov/coreclr,cmckinsey/coreclr,parjong/coreclr,kyulee1/coreclr,cydhaselton/coreclr,gkhanna79/coreclr,tijoytom/coreclr,mmitche/coreclr,gkhanna79/coreclr,yeaicc/coreclr,alexperovich/coreclr,hseok-oh/coreclr,cydhaselton/coreclr,poizan42/coreclr,parjong/coreclr,YongseopKim/coreclr,yeaicc/coreclr,krytarowski/coreclr,parjong/coreclr,parjong/coreclr,cydhaselton/coreclr,hseok-oh/coreclr,JosephTremoulet/coreclr,dpodder/coreclr,sagood/coreclr,ruben-ayrapetyan/coreclr,cydhaselton/coreclr,pgavlin/coreclr,wateret/coreclr,sjsinju/coreclr,kyulee1/coreclr,mmitche/coreclr,dpodder/coreclr,qiudesong/coreclr,cshung/coreclr,jamesqo/coreclr,ruben-ayrapetyan/coreclr,JonHanna/coreclr,ragmani/coreclr,James-Ko/coreclr,ruben-ayrapetyan/coreclr,tijoytom/coreclr,hseok-oh/coreclr,parjong/coreclr,hseok-oh/coreclr,wateret/coreclr,poizan42/coreclr,botaberg/coreclr,hseok-oh/coreclr,YongseopKim/coreclr,sagood/coreclr,mskvortsov/coreclr,wtgodbe/coreclr,tijoytom/coreclr,krytarowski/coreclr,botaberg/coreclr,sagood/coreclr,rartemev/coreclr,sjsinju/coreclr,cshung/coreclr,yizhang82/coreclr,kyulee1/coreclr,cmckinsey/coreclr,ruben-ayrapetyan/coreclr,ragmani/coreclr,mmitche/coreclr,wtgodbe/coreclr,ragmani/coreclr,russellhadley/coreclr,krk/coreclr,krytarowski/coreclr,qiudesong/coreclr,cmckinsey/coreclr,hseok-oh/coreclr,yizhang82/coreclr,AlexGhiondea/coreclr,russellhadley/coreclr,mmitche/coreclr,yizhang82/coreclr,russellhadley/coreclr,tijoytom/coreclr,pgavlin/coreclr,alexperovich/coreclr,cmckinsey/coreclr,rartemev/coreclr,krytarowski/coreclr,qiudesong/coreclr,sjsinju/coreclr,kyulee1/coreclr,pgavlin/coreclr,YongseopKim/coreclr,kyulee1/coreclr,yeaicc/coreclr,alexperovich/coreclr,yizhang82/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,wateret/coreclr,alexperovich/coreclr,JosephTremoulet/coreclr,JonHanna/coreclr,krk/coreclr,YongseopKim/coreclr,cshung/coreclr,cshung/coreclr,poizan42/coreclr,wtgodbe/coreclr