bus: bt1-axi: Use sysfs_streq instead of strncmp

There is a ready-to-use method to compare a retrieved from a sysfs node
string with another string. It treats both NUL and newline-then-NUL as
equivalent string terminations. So use it instead of manually truncating
the line length in the strncmp() method.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Serge Semin <[email protected]>
Cc: Alexey Malahov <[email protected]>
Cc: Olof Johansson <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: [email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: fancer

drivers/bus/bt1-axi.c

@@ -220,9 +220,9 @@ static ssize_t inject_error_store(struct device *dev,
 	 * error while unaligned writing - the AXI bus write error handled
 	 * by this driver.
 	 */
-	if (!strncmp(data, "bus", 3))
+	if (sysfs_streq(data, "bus"))
 		readb(axi->qos_regs);
-	else if (!strncmp(data, "unaligned", 9))
+	else if (sysfs_streq(data, "unaligned"))
 		writeb(0, axi->qos_regs);
 	else
 		return -EINVAL;