Silence noisy log message

The "Trying to unmap vaddr" message doesn't appear to be an actual
error, so don't log it at that level.

Bug: 284220550
Change-Id: Iac6af686fbc478369faf90bb3ac15f1c6dde7f9b
Signed-off-by: Daniel Price <danielprice@google.com>
diff --git a/qseecom/qseecom.c b/qseecom/qseecom.c
index 70a1a93..a27c448 100644
--- a/qseecom/qseecom.c
+++ b/qseecom/qseecom.c
@@ -1459,7 +1459,7 @@
 
 	if (!dmabuf || !vaddr || !sgt || !attach)
 		return;
-	pr_err("Trying to unmap vaddr");
+	pr_notice("Trying to unmap vaddr");
 	dma_buf_vunmap(dmabuf, &dmabufmap);
 	dma_buf_end_cpu_access(dmabuf, DMA_BIDIRECTIONAL);
 	qseecom_dmabuf_unmap(sgt, attach, dmabuf);