spi: Rename enable1 to activate in spi_set_cs()

The enable1 is confusing name. Change it to clearly show what is
the intention behind it. No functional changes.

Fixes: 25093bde ("spi: implement SW control for CS times")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210420131846.75983-1-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi.c

@@ -788,7 +788,7 @@ int spi_register_board_info(struct spi_board_info const *info, unsigned n)
 
 static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 {
-	bool enable1 = enable;
+	bool activate = enable;
 
 	/*
 	 * Avoid calling into the driver (or doing delays) if the chip select
@@ -803,7 +803,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 
 	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
 	    !spi->controller->set_cs_timing) {
-		if (enable1)
+		if (activate)
 			spi_delay_exec(&spi->controller->cs_setup, NULL);
 		else
 			spi_delay_exec(&spi->controller->cs_hold, NULL);
@@ -816,8 +816,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 		if (!(spi->mode & SPI_NO_CS)) {
 			if (spi->cs_gpiod)
 				/* polarity handled by gpiolib */
-				gpiod_set_value_cansleep(spi->cs_gpiod,
-							 enable1);
+				gpiod_set_value_cansleep(spi->cs_gpiod, activate);
 			else
 				/*
 				 * invert the enable line, as active low is
@@ -835,7 +834,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 
 	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
 	    !spi->controller->set_cs_timing) {
-		if (!enable1)
+		if (!activate)
 			spi_delay_exec(&spi->controller->cs_inactive, NULL);
 	}
 }