remoteproc: Clone rproc_ops in rproc_alloc()

In order to allow rproc_alloc() to, in a future patch, update entries in
the "ops" struct we need to make a local copy of it.

Reviewed-By: Loic Pallardy <loic.pallardy@st.com>
Tested-By: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

include/linux/remoteproc.h

@@ -419,7 +419,7 @@ struct rproc {
 	const char *name;
 	char *firmware;
 	void *priv;
-	const struct rproc_ops *ops;
+	struct rproc_ops *ops;
 	struct device dev;
 	const struct rproc_fw_ops *fw_ops;
 	atomic_t power;