libgralloc: include <sys/ioctl.h>

- In ionalloc.cpp, include <sys/ioctl.h> instead of <linux/ioctl.h>, in
  the similar way as other HAL libraries are including.
- Helps in resolving compilation warnings

Change-Id: I9068e1e2dd97ce580aeecc25f611900127502fc7
1 file changed