Staging: sm750fb: ddk750_swi2c.h: Replace spaces with tabs

Replace spaces with tabs at the start of lines in
ddk750_swi2c.h to rectify the following checkpatch warning:
WARNING: please, no spaces at the start of a line
Signed-off-by: Isaac Assegai <isaac.a.travers@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/ddk750_swi2c.h

@@ -29,8 +29,8 @@
  *       0   - Success
  */
 long swI2CInit(
-    unsigned char i2cClkGPIO,
-    unsigned char i2cDataGPIO
+	unsigned char i2cClkGPIO,
+	unsigned char i2cDataGPIO
 );
 
 /*
@@ -45,8 +45,8 @@ long swI2CInit(
  *      Register value
  */
 unsigned char swI2CReadReg(
-    unsigned char deviceAddress,
-    unsigned char registerIndex
+	unsigned char deviceAddress,
+	unsigned char registerIndex
 );
 
 /*
@@ -63,9 +63,9 @@ unsigned char swI2CReadReg(
  *         -1   - Fail
  */
 long swI2CWriteReg(
-    unsigned char deviceAddress,
-    unsigned char registerIndex,
-    unsigned char data
+	unsigned char deviceAddress,
+	unsigned char registerIndex,
+	unsigned char data
 );
 
 /*