gralloc/gralloc960: Drop linux/ion.h references as its gone

Bionic dropped the linux/ion.h header, so make sure we don't
try to include it and cause build errors.

Change-Id: I6af15f1bd2b53e7d5dd29a93295bfc09df36ab62
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/gralloc/alloc_device.cpp b/gralloc/alloc_device.cpp
index 076cb5c..fe3f14f 100644
--- a/gralloc/alloc_device.cpp
+++ b/gralloc/alloc_device.cpp
@@ -39,7 +39,6 @@
 #endif
 
 #if GRALLOC_ARM_DMA_BUF_MODULE
-#include <linux/ion.h>
 #include <ion/ion.h>
 #include "ion_4.12.h"
 #endif
diff --git a/gralloc/gralloc_module.cpp b/gralloc/gralloc_module.cpp
index 8405473..4937b59 100644
--- a/gralloc/gralloc_module.cpp
+++ b/gralloc/gralloc_module.cpp
@@ -37,7 +37,6 @@
 #endif
 
 #if GRALLOC_ARM_DMA_BUF_MODULE
-#include <linux/ion.h>
 #include <ion/ion.h>
 #include <sys/mman.h>
 #endif
diff --git a/gralloc960/gralloc_priv.h b/gralloc960/gralloc_priv.h
index 82538bc..3a54c18 100644
--- a/gralloc960/gralloc_priv.h
+++ b/gralloc960/gralloc_priv.h
@@ -23,7 +23,6 @@
 #include <pthread.h>
 #include <errno.h>
 #include <linux/fb.h>
-#include <linux/ion.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <sys/mman.h>
diff --git a/gralloc960/mali_gralloc_buffer.h b/gralloc960/mali_gralloc_buffer.h
index 959653f..96880be 100644
--- a/gralloc960/mali_gralloc_buffer.h
+++ b/gralloc960/mali_gralloc_buffer.h
@@ -21,7 +21,6 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include <linux/ion.h>
 #include <sys/mman.h>
 
 #include "mali_gralloc_private_interface_types.h"
diff --git a/gralloc960/mali_gralloc_ion.cpp b/gralloc960/mali_gralloc_ion.cpp
index 63d9e18..ccc7e49 100644
--- a/gralloc960/mali_gralloc_ion.cpp
+++ b/gralloc960/mali_gralloc_ion.cpp
@@ -25,7 +25,6 @@
 #include <log/log.h>
 #include <cutils/atomic.h>
 
-#include <linux/ion.h>
 #include <ion/ion.h>
 #include <sys/ioctl.h>