[SPARC]: Add unsigned to unused bit field in a.out.h

Add unsigned to unused bit field in a.out.h to make sparse happy.

[ I took care of the sparc64 side as well -DaveM ]
Signed-off-by: NRobert Reif <reif@earthlink.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/asm-sparc/a.out.h

@@ -80,7 +80,7 @@ struct relocation_info /* used when header.a_machtype == M_SPARC */
         unsigned long   r_address;  /* relocation addr */
         unsigned int    r_index:24; /* segment index or symbol index */
         unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
-        int             r_pad:2;    /* <unused> */
+        unsigned int    r_pad:2;    /* <unused> */
         enum reloc_type r_type:5;   /* type of relocation to perform */
         long            r_addend;   /* addend for relocation value */
 };

include/asm-sparc64/a.out.h

@@ -86,7 +86,7 @@ struct relocation_info /* used when header.a_machtype == M_SPARC */
         unsigned int    r_address;  /* relocation addr */
         unsigned int    r_index:24; /* segment index or symbol index */
         unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
-        int             r_pad:2;    /* <unused> */
+        unsigned int    r_pad:2;    /* <unused> */
         enum reloc_type r_type:5;   /* type of relocation to perform */
         int             r_addend;   /* addend for relocation value */
 };