Make AMD CPU patch optional

src/main.cpp

@@ -56,6 +56,7 @@ static void PrintUsage() {
 	    "  --gpu <index>                        Vulkan physical device index. Default: auto.\n");
 	::printf("  --fullscreen                         Run in borderless desktop fullscreen.\n");
 	::printf("  --vr                                 Enable the virtual VR headset.\n");
+	::printf("  --amd-cpu                            Apply AMD CPU instruction patches (Linux).\n");
 	::printf("  --vblank-frequency <num>             Virtual vblank frequency. Default: 60.\n");
 	::printf("  --console-language <0-29>            Console language. Default: 1 (English US).\n");
 	::printf("  --vulkan-validation <true|false>     Enable Vulkan validation.\n");
@@ -168,6 +169,11 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 			continue;
 		}
 
+		if (arg == "--amd-cpu") {
+			options.config.amd_cpu_enabled = true;
+			continue;
+		}
+
 		if (arg == "--playgo-hack") {
 			options.config.playgo_hack_enabled = true;
 			continue;