wifi: ath10k: use = {} to initialize bmi_target_info instead of memset

wifi: ath10k: use = {} to initialize bmi_target_info instead of memset

Initialize the bmi_target_info structure using = {} at declaration time
instead of calling memset() in each bus-specific code path. This
simplifies the code and avoids an explicit memset.

Signed-off-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20251030130023.1836808-3-zhongqiu.han@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>