nativeGen: Set explicit section types on all platforms

(cherry picked from commit db7f724)

Author: bgamari

compiler/GHC/CmmToAsm/Ppr.hs

@@ -248,6 +248,7 @@ pprGNUSectionHeader config t suffix =
       Text
         | OSMinGW32 <- platformOS platform
                     -> text ",\"xr\""
+        | otherwise -> text ",\"ax\"," <> sectionType platform "progbits"
       CString
         | OSMinGW32 <- platformOS platform
                     -> empty