staging: sm750fb: remove some unnecessary castings

The clock divisor calculations in setMasterClock and setMemoryClock
unnecessaryly cast unsigned int to unsigned int. Removing the casting.
Signed-off-by: NMike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/ddk750_chip.c

@@ -100,7 +100,7 @@ static void setMemoryClock(unsigned int frequency)
 			frequency = MHz(336);
 
 		/* Calculate the divisor */
-		divisor = (unsigned int)roundedDiv(get_mxclk_freq(), frequency);
+		divisor = roundedDiv(get_mxclk_freq(), frequency);
 
 		/* Set the corresponding divisor in the register. */
 		ulReg = PEEK32(CURRENT_GATE);
@@ -147,7 +147,7 @@ static void setMasterClock(unsigned int frequency)
 			frequency = MHz(190);
 
 		/* Calculate the divisor */
-		divisor = (unsigned int)roundedDiv(get_mxclk_freq(), frequency);
+		divisor = roundedDiv(get_mxclk_freq(), frequency);
 
 		/* Set the corresponding divisor in the register. */
 		ulReg = PEEK32(CURRENT_GATE);