rpmsg: qcom: correct kerneldoc

Correct kerneldoc warnings like:

  drivers/rpmsg/qcom_glink_ssr.c:45:
    warning: expecting prototype for G(). Prototype was for GLINK_SSR_DO_CLEANUP() instead

Also fix meaning of 'flag' argument.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220519073330.7187-3-krzysztof.kozlowski@linaro.org

drivers/rpmsg/qcom_glink_ssr.c

@@ -39,7 +39,7 @@ struct cleanup_done_msg {
 	__le32 seq_num;
 };
 
-/**
+/*
  * G-Link SSR protocol commands
  */
 #define GLINK_SSR_DO_CLEANUP	0

drivers/rpmsg/qcom_smd.c

@@ -729,11 +729,11 @@ static int qcom_smd_write_fifo(struct qcom_smd_channel *channel,
 }
 
 /**
- * qcom_smd_send - write data to smd channel
+ * __qcom_smd_send - write data to smd channel
  * @channel:	channel handle
  * @data:	buffer of data to write
  * @len:	number of bytes to write
- * @wait:	flag to indicate if write has ca wait
+ * @wait:	flag to indicate if write can wait
  *
  * This is a blocking write of len bytes into the channel's tx ring buffer and
  * signal the remote end. It will sleep until there is enough space available