declance: Remove `incompatible pointer type' warnings

Revert damage caused by 43d620c8:

.../declance.c: In function 'cp_to_buf':
.../declance.c:347: warning: assignment from incompatible pointer type
.../declance.c:348: warning: assignment from incompatible pointer type
.../declance.c: In function 'cp_from_buf':
.../declance.c:406: warning: assignment from incompatible pointer type
.../declance.c:407: warning: assignment from incompatible pointer type

Also add a `const' qualifier where applicable and adjust formatting.
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/declance.c

@@ -344,8 +344,8 @@ static void cp_to_buf(const int type, void *to, const void *from, int len)
 		}
 
 		clen = len & 1;
-		rtp = tp;
-		rfp = fp;
+		rtp = (unsigned char *)tp;
+		rfp = (const unsigned char *)fp;
 		while (clen--) {
 			*rtp++ = *rfp++;
 		}
@@ -372,8 +372,8 @@ static void cp_to_buf(const int type, void *to, const void *from, int len)
 		 * do the rest, if any.
 		 */
 		clen = len & 15;
-		rtp = (unsigned char *) tp;
-		rfp = (unsigned char *) fp;
+		rtp = (unsigned char *)tp;
+		rfp = (const unsigned char *)fp;
 		while (clen--) {
 			*rtp++ = *rfp++;
 		}
@@ -403,8 +403,8 @@ static void cp_from_buf(const int type, void *to, const void *from, int len)
 
 		clen = len & 1;
 
-		rtp = tp;
-		rfp = fp;
+		rtp = (unsigned char *)tp;
+		rfp = (const unsigned char *)fp;
 
 		while (clen--) {
 			*rtp++ = *rfp++;
@@ -433,8 +433,8 @@ static void cp_from_buf(const int type, void *to, const void *from, int len)
 		 * do the rest, if any.
 		 */
 		clen = len & 15;
-		rtp = (unsigned char *) tp;
-		rfp = (unsigned char *) fp;
+		rtp = (unsigned char *)tp;
+		rfp = (const unsigned char *)fp;
 		while (clen--) {
 			*rtp++ = *rfp++;
 		}