CameraHAL: Increased buffer size

Increased the buffer size of the string containing video device
nodes.

Change-Id: Ieada7885480faaf95e6eb70378a0c89f77a41289
Signed-off-by: Annamalai Lakshmanan <annamalai.lakshmanan@linaro.org>
diff --git a/libcamera/CameraHardware.cpp b/libcamera/CameraHardware.cpp
index db5a801..4a2da1c 100644
--- a/libcamera/CameraHardware.cpp
+++ b/libcamera/CameraHardware.cpp
@@ -232,7 +232,7 @@
     IMG_native_handle_t** hndl2hndl;
     IMG_native_handle_t* handle;
     int stride;
-    char devnode[12];
+    char devnode[15];
     Mutex::Autolock lock(mLock);
     if (mPreviewThread != 0) {
         //already running
@@ -385,7 +385,7 @@
     struct v4l2_requestbuffers creqbuf;
     struct v4l2_capability cap;
     int i;
-    char devnode[12];
+    char devnode[15];
     camera_memory_t* picture = NULL;