Make MO_Prefetch_Data a no-op in the C backend (#8437).
Make MO_Prefetch_Data a no-op in the C backend (#8437).

Signed-off-by: Erik de Castro Lopo <1586a8e151fb6d548e7a343b9bcdfea42e83ffc0@mega-nerd.com>

snoyberg/ghc,jstolarek/ghc,sdiehl/ghc,forked-upstream-packages-for-ghcjs/ghc,ezyang/ghc,mfine/ghc,vTurbine/ghc,mcschroeder/ghc,gcampax/ghc,mettekou/ghc,oldmanmike/ghc,bitemyapp/ghc,anton-dessiatov/ghc,nushio3/ghc,mettekou/ghc,mettekou/ghc,lukexi/ghc-7.8-arm64,fmthoma/ghc,tjakway/ghcjvm,elieux/ghc,anton-dessiatov/ghc,wxwxwwxxx/ghc,gridaphobe/ghc,jstolarek/ghc,olsner/ghc,anton-dessiatov/ghc,wxwxwwxxx/ghc,green-haskell/ghc,hferreiro/replay,fmthoma/ghc,TomMD/ghc,lukexi/ghc,tjakway/ghcjvm,nathyong/microghc-ghc,ghc-android/ghc,TomMD/ghc,shlevy/ghc,hferreiro/replay,nkaretnikov/ghc,hferreiro/replay,frantisekfarka/ghc-dsi,mfine/ghc,bitemyapp/ghc,da-x/ghc,mcschroeder/ghc,mcschroeder/ghc,hferreiro/replay,ml9951/ghc,vTurbine/ghc,acowley/ghc,nathyong/microghc-ghc,tibbe/ghc,vikraman/ghc,bitemyapp/ghc,vTurbine/ghc,anton-dessiatov/ghc,nkaretnikov/ghc,nkaretnikov/ghc,TomMD/ghc,ml9951/ghc,siddhanathan/ghc,ezyang/ghc,nushio3/ghc,shlevy/ghc,christiaanb/ghc,sgillespie/ghc,sgillespie/ghc,christiaanb/ghc,mcschroeder/ghc,siddhanathan/ghc,nathyong/microghc-ghc,GaloisInc/halvm-ghc,lukexi/ghc,tibbe/ghc,spacekitteh/smcghc,nathyong/microghc-ghc,snoyberg/ghc,christiaanb/ghc,TomMD/ghc,mfine/ghc,siddhanathan/ghc,AlexanderPankiv/ghc,jstolarek/ghc,ghc-android/ghc,vTurbine/ghc,sgillespie/ghc,AlexanderPankiv/ghc,acowley/ghc,mcschroeder/ghc,shlevy/ghc,forked-upstream-packages-for-ghcjs/ghc,ml9951/ghc,nushio3/ghc,jstolarek/ghc,nathyong/microghc-ghc,lukexi/ghc-7.8-arm64,sdiehl/ghc,siddhanathan/ghc,nkaretnikov/ghc,holzensp/ghc,siddhanathan/ghc,nkaretnikov/ghc,elieux/ghc,siddhanathan/ghc,da-x/ghc,acowley/ghc,wxwxwwxxx/ghc,mcschroeder/ghc,GaloisInc/halvm-ghc,elieux/ghc,siddhanathan/ghc,AlexanderPankiv/ghc,lukexi/ghc-7.8-arm64,spacekitteh/smcghc,sdiehl/ghc,tibbe/ghc,oldmanmike/ghc,mettekou/ghc,sdiehl/ghc,sdiehl/ghc,gcampax/ghc,lukexi/ghc-7.8-arm64,acowley/ghc,da-x/ghc,AlexanderPankiv/ghc,ghc-android/ghc,lukexi/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,vikraman/ghc,gridaphobe/ghc,vikraman/ghc,olsner/ghc,ezyang/ghc,GaloisInc/halvm-ghc,da-x/ghc,oldmanmike/ghc,ryantm/ghc,vTurbine/ghc,hferreiro/replay,sgillespie/ghc,lukexi/ghc,mettekou/ghc,frantisekfarka/ghc-dsi,forked-upstream-packages-for-ghcjs/ghc,sdiehl/ghc,fmthoma/ghc,elieux/ghc,gridaphobe/ghc,urbanslug/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,snoyberg/ghc,fmthoma/ghc,gcampax/ghc,urbanslug/ghc,wxwxwwxxx/ghc,ghc-android/ghc,anton-dessiatov/ghc,frantisekfarka/ghc-dsi,olsner/ghc,nushio3/ghc,gridaphobe/ghc,gcampax/ghc,sgillespie/ghc,vTurbine/ghc,nushio3/ghc,nushio3/ghc,forked-upstream-packages-for-ghcjs/ghc,urbanslug/ghc,christiaanb/ghc,christiaanb/ghc,elieux/ghc,TomMD/ghc,oldmanmike/ghc,hferreiro/replay,frantisekfarka/ghc-dsi,mfine/ghc,oldmanmike/ghc,GaloisInc/halvm-ghc,ghc-android/ghc,sgillespie/ghc,acowley/ghc,da-x/ghc,da-x/ghc,wxwxwwxxx/ghc,ml9951/ghc,tjakway/ghcjvm,ryantm/ghc,AlexanderPankiv/ghc,spacekitteh/smcghc,nkaretnikov/ghc,sdiehl/ghc,ryantm/ghc,green-haskell/ghc,AlexanderPankiv/ghc,nkaretnikov/ghc,tibbe/ghc,vTurbine/ghc,hferreiro/replay,urbanslug/ghc,snoyberg/ghc,holzensp/ghc,TomMD/ghc,ezyang/ghc,nathyong/microghc-ghc,shlevy/ghc,ryantm/ghc,green-haskell/ghc,holzensp/ghc,forked-upstream-packages-for-ghcjs/ghc,ezyang/ghc,mettekou/ghc,bitemyapp/ghc,wxwxwwxxx/ghc,fmthoma/ghc,ghc-android/ghc,green-haskell/ghc,fmthoma/ghc,olsner/ghc,acowley/ghc,anton-dessiatov/ghc,ezyang/ghc,spacekitteh/smcghc,snoyberg/ghc,ezyang/ghc,ml9951/ghc,jstolarek/ghc,ml9951/ghc,shlevy/ghc,mettekou/ghc,vikraman/ghc,ghc-android/ghc,christiaanb/ghc,vikraman/ghc,green-haskell/ghc,christiaanb/ghc,nathyong/microghc-ghc,nushio3/ghc,mcschroeder/ghc,urbanslug/ghc,vikraman/ghc,ml9951/ghc,urbanslug/ghc,gridaphobe/ghc,frantisekfarka/ghc-dsi,urbanslug/ghc,TomMD/ghc,gcampax/ghc,mfine/ghc,holzensp/ghc,vikraman/ghc,spacekitteh/smcghc,fmthoma/ghc,tjakway/ghcjvm,ryantm/ghc,mfine/ghc,anton-dessiatov/ghc,mfine/ghc,tjakway/ghcjvm,olsner/ghc,tibbe/ghc,shlevy/ghc,da-x/ghc,GaloisInc/halvm-ghc,shlevy/ghc,gridaphobe/ghc,gcampax/ghc,AlexanderPankiv/ghc,oldmanmike/ghc,forked-upstream-packages-for-ghcjs/ghc,olsner/ghc,lukexi/ghc-7.8-arm64,lukexi/ghc,wxwxwwxxx/ghc,gcampax/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,elieux/ghc,acowley/ghc,elieux/ghc,tjakway/ghcjvm,holzensp/ghc,oldmanmike/ghc,bitemyapp/ghc,gridaphobe/ghc,ml9951/ghc,olsner/ghc,sgillespie/ghc