[PATCH] media: usb: cx231xx-417: include linux/slab.h header

[Anders Roxell]

cx231-417 uses kmalloc/kfree functions, so slab header needs to be
included in order to fix the following build errors:
drivers/media/usb/cx231xx/cx231xx-417.c: In function âcx231xx_bulk_copyâ:
  CC      drivers/media/platform/qcom/venus/firmware.o
drivers/media/usb/cx231xx/cx231xx-417.c:1389:11: error: implicit declaration of function âkmallocâ; did you mean âvmallocâ? [-Werror=implicit-function-declaration]
  buffer = kmalloc(buffer_size, GFP_ATOMIC);
           ^~~~~~~
           vmalloc
drivers/media/usb/cx231xx/cx231xx-417.c:1389:9: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  buffer = kmalloc(buffer_size, GFP_ATOMIC);
         ^
drivers/media/usb/cx231xx/cx231xx-417.c:1400:2: error: implicit declaration of function âkfreeâ; did you mean âvfreeâ? [-Werror=implicit-function-declaration]
  kfree(buffer);
  ^~~~~
  vfree
drivers/media/usb/cx231xx/cx231xx-417.c: In function âmpeg_openâ:
drivers/media/usb/cx231xx/cx231xx-417.c:1713:7: error: implicit declaration of function âkzallocâ; did you mean âvzallocâ? [-Werror=implicit-function-declaration]
  fh = kzalloc(sizeof(*fh), GFP_KERNEL);
       ^~~~~~~
       vzalloc
drivers/media/usb/cx231xx/cx231xx-417.c:1713:5: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  fh = kzalloc(sizeof(*fh), GFP_KERNEL);
     ^

Signed-off-by: Anders Roxell <anders.roxell@xxxxxxxxxx>
---
 drivers/media/usb/cx231xx/cx231xx-417.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index b80e6857e2eb..2f3b0564d676 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -29,6 +29,7 @@
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/firmware.h>
+#include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
-- 
2.17.0