ath10k: change ATH10K_SDIO_BUS_REQUEST_MAX_NUM from 64 to 1024

sdio bus bandwidth is low, sometimes for high performance TX test,
it will lack of ath10k_sdio_bus_request, it will print message:
ath10k_sdio mmc1:0001:1: unable to allocate bus request for async request

change the num from 64 to 1024 will not happen it.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWP-1.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200212080415.31265-3-wgong@codeaurora.org

drivers/net/wireless/ath/ath10k/sdio.h

@@ -37,7 +37,7 @@
 	(ATH10K_SDIO_MAX_BUFFER_SIZE - sizeof(struct ath10k_htc_hdr))
 
 #define ATH10K_HIF_MBOX_NUM_MAX                 4
-#define ATH10K_SDIO_BUS_REQUEST_MAX_NUM         64
+#define ATH10K_SDIO_BUS_REQUEST_MAX_NUM         1024
 
 #define ATH10K_SDIO_HIF_COMMUNICATION_TIMEOUT_HZ (100 * HZ)
 
@@ -98,6 +98,7 @@
 #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_OFF 0xFFFEFFFF
 #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_ON 0x10000
 
+/* TODO: remove this and use skb->cb instead, much cleaner approach */
 struct ath10k_sdio_bus_request {
 	struct list_head list;