staging:fbtft: Using str_true_false() helper instead of hardcoded strings

Using str_true_false() helper instead of hardcoded strings.

Signed-off-by: Paolo Perego <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Paolo Perego

drivers/staging/fbtft/fb_ssd1351.c

@@ -6,6 +6,7 @@
 #include <linux/init.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
+#include <linux/string_choices.h>
 
 #include "fbtft.h"
 
@@ -162,7 +163,7 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
 static int blank(struct fbtft_par *par, bool on)
 {
 	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
+		      __func__, str_true_false(on));
 	if (on)
 		write_reg(par, 0xAE);
 	else