Gcc12 related fixes (#1138)

* GCC12 related fixes but still compiles on GCC9

* Suppress warnings about volatile +=

* Enable c++20 if supported by the compiler

On gcc12 we need to use -std=c++20 since constexpr .c_str() on std::string is only officially available since c++20 and the new gcc wouldnt let us use it with older standard

* code format

---------

Co-authored-by: Eisenberger Tamas <e.tamas@iwstudio.hu>

firmware/common/jtag_tap.cpp

@@ -24,6 +24,7 @@
 #include "utility.hpp"
 
 #include <string>
+#include <array>
 
 namespace jtag {
 namespace tap {

firmware/common/pocsag_packet.hpp

@@ -25,6 +25,7 @@
 
 #include <cstdint>
 #include <cstddef>
+#include <array>
 
 #include "baseband.hpp"
 

firmware/common/tonesets.hpp

@@ -24,6 +24,7 @@
 #define __TONESETS_H__
 
 #include <memory>
+#include <array>
 
 #define TONES_SAMPLERATE 1536000
 #define TONES_DELTA_COEF(sr) ((1ULL << 32) / sr)

firmware/common/tpms_packet.hpp

@@ -60,6 +60,10 @@ class TransponderID {
         return id_;
     }
 
+    constexpr bool operator==(const TransponderID& other) const {
+        return id_ == other.id_;
+    }
+
    private:
     uint32_t id_;
 };