feat: add Broadcom FullMAC Wi-Fi driver

tests/wifi/shim/CppLib/Spinlock.hpp

@@ -14,6 +14,7 @@ namespace kcp {
         std::atomic_flag f{ATOMIC_FLAG_INIT};
     public:
         void Acquire() { while (f.test_and_set(std::memory_order_acquire)) {} }
+        bool TryAcquire() { return !f.test_and_set(std::memory_order_acquire); }
         void Release() { f.clear(std::memory_order_release); }
     };
 }

tests/wifi/shim/Memory/Heap.hpp

@@ -0,0 +1,10 @@
+#pragma once
+#include <cstdlib>
+namespace Memory {
+    struct HostHeap {
+        void* Request(size_t n) { return malloc(n); }
+        void Free(void* p) { free(p); }
+    };
+    inline HostHeap g_hostHeap;
+    inline HostHeap* g_heap = &g_hostHeap;
+}

tests/wifi/shim/Terminal/Terminal.hpp

@@ -1,6 +1,7 @@
 #pragma once
 #include <cstdio>
 #include <cstdint>
+#include <CppLib/Stream.hpp>
 namespace Kt {
     enum KernelLogLevel { INFO, OK, WARNING, ERROR };
     class KernelLogStream {
@@ -10,5 +11,6 @@ namespace Kt {
         KernelLogStream& operator<<(const char* s) { fprintf(stderr, "%s", s); return *this; }
         KernelLogStream& operator<<(uint64_t v) { fprintf(stderr, "%llu", (unsigned long long)v); return *this; }
         KernelLogStream& operator<<(int v) { fprintf(stderr, "%d", v); return *this; }
+        KernelLogStream& operator<<(base::Manip) { return *this; }
     };
 }

tests/wifi/shim/Timekeeping/Timer.hpp

@@ -1,3 +1,7 @@
 #pragma once
 #include <cstdint>
-namespace Timekeeping { uint64_t GetMilliseconds(); }
+namespace Timekeeping {
+    uint64_t GetMilliseconds();
+    void BusyWaitMs(uint64_t ms);
+    void BusyWaitUs(uint64_t us);
+}