tty: serial: samsung: Improve naming for common macro

Having "_USI" suffix in EXYNOS_COMMON_SERIAL_DRV_DATA_USI() macro is
confusing. Rename it to just EXYNOS_COMMON_SERIAL_DRV_DATA() and provide
USI registers availability for all Exynos variants instead. While at it,
also convert .has_usi field type to bool, so its usage is more obvious.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Sam Protsenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/samsung_tty.c

···
 struct s3c24xx_uart_info {
 	char			*name;
 	enum s3c24xx_port_type	type;
-	unsigned int		has_usi;
+	bool			has_usi;
 	unsigned int		port_type;
 	unsigned int		fifosize;
 	unsigned long		rx_fifomask;
···
 #endif
 
 #if defined(CONFIG_ARCH_EXYNOS)
-#define EXYNOS_COMMON_SERIAL_DRV_DATA_USI(_has_usi)		\
+#define EXYNOS_COMMON_SERIAL_DRV_DATA(_has_usi)			\
 	.info = &(struct s3c24xx_uart_info) {			\
 		.name		= "Samsung Exynos UART",	\
 		.type		= TYPE_S3C6400,			\
···
 		.has_fracval	= 1,				\
 	}							\
 
-#define EXYNOS_COMMON_SERIAL_DRV_DATA				\
-	EXYNOS_COMMON_SERIAL_DRV_DATA_USI(0)
-
 static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = {
-	EXYNOS_COMMON_SERIAL_DRV_DATA,
+	EXYNOS_COMMON_SERIAL_DRV_DATA(false),
 	.fifosize = { 256, 64, 16, 16 },
 };
 
 static struct s3c24xx_serial_drv_data exynos5433_serial_drv_data = {
-	EXYNOS_COMMON_SERIAL_DRV_DATA,
+	EXYNOS_COMMON_SERIAL_DRV_DATA(false),
 	.fifosize = { 64, 256, 16, 256 },
 };
 
 static struct s3c24xx_serial_drv_data exynos850_serial_drv_data = {
-	EXYNOS_COMMON_SERIAL_DRV_DATA_USI(1),
+	EXYNOS_COMMON_SERIAL_DRV_DATA(true),
 	.fifosize = { 256, 64, 64, 64 },
 };