msm: kgsl: Add KGSL_DEV_ERR_ONCE helper macro for logging

Add KGSL_DEV_ERR_ONCE macro to kgsl_log.h, with functionality
similar to pr_err_once() but output format of dev_err(). Add logging
for deprecated code usage, to kgsl_ioctl_sharedmem_from_vmalloc()
and KGSL_USER_MEM_TYPE_ADDR switch case from kgsl_ioctl_map_user_mem()

Change-Id: I43bbd5acfb4630b88170034d61f1d099fbe3f118
Signed-off-by: Harsh Vardhan Dwivedi <hdwivedi@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl.c b/drivers/gpu/msm/kgsl.c
index 37d18bc..1b0a7bc 100644
--- a/drivers/gpu/msm/kgsl.c
+++ b/drivers/gpu/msm/kgsl.c
@@ -1195,6 +1195,8 @@
 	struct kgsl_mem_entry *entry = NULL;
 	struct vm_area_struct *vma;
 
+	KGSL_DEV_ERR_ONCE(dev_priv->device, "IOCTL_KGSL_SHAREDMEM_FROM_VMALLOC"
+			" is deprecated\n");
 	if (!kgsl_mmu_enabled())
 		return -ENODEV;
 
@@ -1637,6 +1639,8 @@
 		break;
 
 	case KGSL_USER_MEM_TYPE_ADDR:
+		KGSL_DEV_ERR_ONCE(dev_priv->device, "User mem type "
+				"KGSL_USER_MEM_TYPE_ADDR is deprecated\n");
 		if (!kgsl_mmu_enabled()) {
 			KGSL_DRV_ERR(dev_priv->device,
 				"Cannot map paged memory with the "