gpu: ion: enable the kmalloc heap

There are some Ion clients who would like to use the kmalloc
heap. Enable it.

Change-Id: Ie818be9e1211d52d489ad2cb63d94e2fddfc0f01
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
diff --git a/include/linux/msm_ion.h b/include/linux/msm_ion.h
index edf2401..c3eb442 100644
--- a/include/linux/msm_ion.h
+++ b/include/linux/msm_ion.h
@@ -39,6 +39,7 @@
 	ION_CP_MFC_HEAP_ID = 12,
 	ION_CP_WB_HEAP_ID = 16, /* 8660 only */
 	ION_CAMERA_HEAP_ID = 20, /* 8660 only */
+	ION_SYSTEM_CONTIG_HEAP_ID = 21,
 	ION_ADSP_HEAP_ID = 22,
 	ION_SF_HEAP_ID = 24,
 	ION_IOMMU_HEAP_ID = 25,
@@ -87,6 +88,7 @@
 
 #define ION_ADSP_HEAP_NAME	"adsp"
 #define ION_VMALLOC_HEAP_NAME	"vmalloc"
+#define ION_KMALLOC_HEAP_NAME	"kmalloc"
 #define ION_AUDIO_HEAP_NAME	"audio"
 #define ION_SF_HEAP_NAME	"sf"
 #define ION_MM_HEAP_NAME	"mm"