Do slightly better at threading the search for GPS hardware (#8240)

* Do slightly better at threading the search for GPS hardware

* Formatting and minor logic fix

* Remove now-spam GPS Log messages

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Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/gps/GPS.h

@@ -151,6 +151,8 @@ class GPS : private concurrency::OSThread
     TinyGPSPlus reader;
     uint8_t fixQual = 0; // fix quality from GPGGA
     uint32_t lastChecksumFailCount = 0;
+    uint8_t currentStep = 0;
+    int32_t currentDelay = 2000;
 
 #ifndef TINYGPS_OPTION_NO_CUSTOM_FIELDS
     // (20210908) TinyGps++ can only read the GPGSA "FIX TYPE" field