softfloat: Use uint16 consistently

Prepares for uint16 replacement.

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 7951a0e..be1206d 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -6011,10 +6011,10 @@
     return res;
 }
 
-unsigned int float32_to_uint16_round_to_zero( float32 a STATUS_PARAM )
+uint16 float32_to_uint16_round_to_zero( float32 a STATUS_PARAM )
 {
     int64_t v;
-    unsigned int res;
+    uint16 res;
 
     v = float32_to_int64_round_to_zero(a STATUS_VAR);
     if (v < 0) {
@@ -6065,10 +6065,10 @@
     return res;
 }
 
-unsigned int float64_to_uint16_round_to_zero( float64 a STATUS_PARAM )
+uint16 float64_to_uint16_round_to_zero( float64 a STATUS_PARAM )
 {
     int64_t v;
-    unsigned int res;
+    uint16 res;
 
     v = float64_to_int64_round_to_zero(a STATUS_VAR);
     if (v < 0) {