drm/amdkfd: Replace zero-length array with flexible-array member

There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use "flexible array members" for these cases. The older
style of one-element or zero-length arrays should no longer be used.
Reference:
https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arraysReported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

@@ -1084,7 +1084,7 @@ struct kfd_criu_svm_range_priv_data {
 	uint64_t start_addr;
 	uint64_t size;
 	/* Variable length array of attributes */
-	struct kfd_ioctl_svm_attribute attrs[0];
+	struct kfd_ioctl_svm_attribute attrs[];
 };
 
 struct kfd_criu_queue_priv_data {