ath11k: configure RDDM size to mhi for recovery by firmware

The rddm_size is needed by firmware while mhi enter RDDM state, add it
to support recovery when ath11k receive MHI_CB_EE_RDDM message.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03003-QCAHSPSWPL_V1_V2_SILICONZ_LITE-2
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220209060012.32478-4-quic_wgong@quicinc.com

drivers/net/wireless/ath/ath11k/mhi.c

@@ -13,6 +13,7 @@
 #include "pci.h"
 
 #define MHI_TIMEOUT_DEFAULT_MS	90000
+#define RDDM_DUMP_SIZE	0x420000
 
 static struct mhi_channel_config ath11k_mhi_channels_qca6390[] = {
 	{
@@ -382,6 +383,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 		mhi_ctrl->iova_stop = 0xFFFFFFFF;
 	}
 
+	mhi_ctrl->rddm_size = RDDM_DUMP_SIZE;
 	mhi_ctrl->sbl_size = SZ_512K;
 	mhi_ctrl->seg_len = SZ_512K;
 	mhi_ctrl->fbc_download = true;