drm/amd/display: Fix mismatch type comparison in custom_float

[Why & How]
Passing uint into uchar function param.  Pass uint instead

Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Samson Tam

drivers/gpu/drm/amd/display/dc/sspl/spl_fixpt31_32.c

@@ -346,7 +346,7 @@ struct spl_fixed31_32 spl_fixpt_exp(struct spl_fixed31_32 arg)
 		if (m > 0)
 			return spl_fixpt_shl(
 				spl_fixed31_32_exp_from_taylor_series(r),
-				(unsigned char)m);
+				(unsigned int)m);
 		else
 			return spl_fixpt_div_int(
 				spl_fixed31_32_exp_from_taylor_series(r),

drivers/gpu/drm/amd/display/dc/sspl/spl_fixpt31_32.h

@@ -189,7 +189,7 @@ static inline struct spl_fixed31_32 spl_fixpt_clamp(
  * @brief
  * result = arg << shift
  */
-static inline struct spl_fixed31_32 spl_fixpt_shl(struct spl_fixed31_32 arg, unsigned char shift)
+static inline struct spl_fixed31_32 spl_fixpt_shl(struct spl_fixed31_32 arg, unsigned int shift)
 {
 	SPL_ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||
 		((arg.value < 0) && (arg.value >= ~(LLONG_MAX >> shift))));
@@ -203,7 +203,7 @@ static inline struct spl_fixed31_32 spl_fixpt_shl(struct spl_fixed31_32 arg, uns
  * @brief
  * result = arg >> shift
  */
-static inline struct spl_fixed31_32 spl_fixpt_shr(struct spl_fixed31_32 arg, unsigned char shift)
+static inline struct spl_fixed31_32 spl_fixpt_shr(struct spl_fixed31_32 arg, unsigned int shift)
 {
 	bool negative = arg.value < 0;