radeon_hd: Fix non-gcc2 pragma statement

* I'll ping the linux radeon guys to see if
  we can get this adjustment made as we use
  stock atombios headers

src/add-ons/accelerants/radeon_hd/atombios/pptable.h

@@ -23,7 +23,9 @@
 #ifndef _PPTABLE_H
 #define _PPTABLE_H
 
-#pragma pack(push, 1)
+// Haiku GCC2 fix
+//#pragma pack(push, 1)
+#pragma pack(1)
 
 typedef struct _ATOM_PPLIB_THERMALCONTROLLER
 
@@ -677,6 +679,9 @@ typedef struct _ATOM_PPLIB_PPM_Table
       ULONG  ulTjmax;
 } ATOM_PPLIB_PPM_Table;
 
-#pragma pack(pop)
+// Haiku GCC2 fix
+//#pragma pack(pop)
+#pragma pack()
+
 
 #endif