[PATCHv3] ath10k : Fix channel survey dump

[Venkateswara Naralasetty <vnaralas@codeaurora.org>]

Channel active/busy time are showing incorrect(less than previous or
sometimes zero) for successive survey dump command.

example:
Survey data from wlan0
	frequency:                      5180 MHz [in use]
	channel active time:            54995 ms
	channel busy time:              432 ms
	channel receive time:           0 ms
	channel transmit time:          59 ms
Survey data from wlan0
	frequency:                      5180 MHz [in use]
	channel active time:            32592 ms
	channel busy time:              254 ms
	channel receive time:           0 ms
	channel transmit time:          0 ms

This patch fix this issue by assigning 'wmi_bss_survey_req_type'
as 'WMI_BSS_SURVEY_REQ_TYPE_READ' which accumulate survey data in
FW and send survey data to driver upon the driver request. Wrap around
is taken care by FW.

hardware used : QCA9984
firmware ver  : ver 10.4-3.5.3-00057

hardware used : QCA988X
firmware ver  : 10.2.4-1.0-00047

Tested-by: Markus Theil <markus.theil@tu-ilmenau.de>
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
---
v3:
 * Rebased on TOT and added Tested-by

 drivers/net/wireless/ath/ath10k/mac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index a1147cc..9330b52 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -7275,7 +7275,7 @@ ath10k_mac_update_bss_chan_survey(struct ath10k *ar,
 				  struct ieee80211_channel *channel)
 {
 	int ret;
-	enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ_CLEAR;
+	enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ;
 
 	lockdep_assert_held(&ar->conf_mutex);
 
-- 
2.7.4