wifi(implementation): Increase stop timeout

The current timeout of 50ms seems to be insufficient on some devices.
So, changing it to a higher value.

Bug: 66334487
Test:  Ran the VTS tests continously in a loop for 30 minutes
without failure. Previously, failure occurence was about once every
5-10 minutes.
`while adb shell /data/VtsHalWifiSupplicantV1_0TargetTest; do :;
done; adb bugreport`

Change-Id: I884de64d748b46b9710a702f3c72cc30dd51627e
diff --git a/wifi/1.1/default/wifi_legacy_hal.cpp b/wifi/1.1/default/wifi_legacy_hal.cpp
index a6f6971..36da6e5 100644
--- a/wifi/1.1/default/wifi_legacy_hal.cpp
+++ b/wifi/1.1/default/wifi_legacy_hal.cpp
@@ -35,7 +35,7 @@
 static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
 static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
 static constexpr uint32_t kMaxRingBuffers = 10;
-static constexpr uint32_t kMaxStopCompleteWaitMs = 50;
+static constexpr uint32_t kMaxStopCompleteWaitMs = 100;
 
 // Helper function to create a non-const char* for legacy Hal API's.
 std::vector<char> makeCharVec(const std::string& str) {