ASoC: rt1015: add missing header inclusion

To fix compilation error:

error: implicit declaration of function 'ACPI_PTR'
[-Werror,-Wimplicit-function-declaration]
                .acpi_match_table = ACPI_PTR(rt1015_acpi_match),
		                    ^

Adds the missing header "acpi.h" inclusion and sorts in alphabetical.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200625153543.85039-4-tzungbi@google.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1015.c

@@ -8,23 +8,24 @@
 //
 //
 
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
 #include <linux/fs.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/delay.h>
+#include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/regmap.h>
-#include <linux/i2c.h>
-#include <linux/platform_device.h>
-#include <linux/firmware.h>
-#include <linux/gpio.h>
 #include <sound/core.h>
+#include <sound/initval.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
-#include <sound/soc.h>
 #include <sound/soc-dapm.h>
-#include <sound/initval.h>
+#include <sound/soc.h>
 #include <sound/tlv.h>
 
 #include "rl6231.h"