disp: msm: import DMA_BUF module symbols

This change imports the necessary DMA_BUF symbols from the module
as they are now contained within the module namespace.

Link: https://patchwork.kernel.org/project/dri-devel/patch/YU8oVDFoeD5YYeDT@kroah.com/#24477195

Change-Id: I18a0a812567425d55fedbab67f7a42d3f54351ca
Signed-off-by: GG Hou <quic_renjhou@quicinc.com>
Signed-off-by: Nilaan Gunabalachandran <quic_ngunabal@quicinc.com>

msm/msm_smmu.c

@@ -617,3 +617,6 @@ void __exit msm_smmu_driver_cleanup(void)
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("MSM SMMU driver");
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 19, 0))
+MODULE_IMPORT_NS(DMA_BUF);
+#endif