MIPS: math-emu: Replace DP_MBITS with DP_FBITS and SP_MBITS with SP_FBITS.

Both were defined as 23 rsp. 52 though the mentissa is actually a bit more
than the fraction.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/math-emu/dp_div.c b/arch/mips/math-emu/dp_div.c
index 3b568b7..13ecffa 100644
--- a/arch/mips/math-emu/dp_div.c
+++ b/arch/mips/math-emu/dp_div.c
@@ -129,7 +129,7 @@
 		int re = xe - ye;
 		u64 bm;
 
-		for (bm = DP_MBIT(DP_MBITS + 2); bm; bm >>= 1) {
+		for (bm = DP_MBIT(DP_FBITS + 2); bm; bm >>= 1) {
 			if (xm >= ym) {
 				xm -= ym;
 				rm |= bm;
@@ -146,7 +146,7 @@
 
 		/* normalise rm to rounding precision ?
 		 */
-		while ((rm >> (DP_MBITS + 3)) == 0) {
+		while ((rm >> (DP_FBITS + 3)) == 0) {
 			rm <<= 1;
 			re--;
 		}