Wifi: Invalid bandwidth crash handling

Treat WIFI_CHAN_WIDTH_INVALID(-1) and any other unknown
bandwidth value as invalid.

Bug: 182850702
Test: VTS - VtsHalWifiV1_5TargetTest
Change-Id: Id25d50af9283b89f135a4f36e1f696f6db4e302e
diff --git a/wifi/1.5/default/hidl_struct_util.cpp b/wifi/1.5/default/hidl_struct_util.cpp
index baa898e..125a50f 100644
--- a/wifi/1.5/default/hidl_struct_util.cpp
+++ b/wifi/1.5/default/hidl_struct_util.cpp
@@ -2557,10 +2557,9 @@
             return WifiChannelWidthInMhz::WIDTH_5;
         case legacy_hal::WIFI_CHAN_WIDTH_10:
             return WifiChannelWidthInMhz::WIDTH_10;
-        case legacy_hal::WIFI_CHAN_WIDTH_INVALID:
+        default:
             return WifiChannelWidthInMhz::WIDTH_INVALID;
     };
-    CHECK(false) << "Unknown legacy type: " << type;
 }
 
 legacy_hal::wifi_rtt_preamble convertHidlRttPreambleToLegacy(