Add a better CPU description

These days, even when pyrit is running on a non x86 CPU, it shows the platform
as x86.

I just changed that to read the value from the getauxval(3) and print it, other
than the hard coded x86.

cpyrit/_cpyrit_cpu.c

@@ -40,6 +40,7 @@
 #include <pcap.h>
 #include "cpufeatures.h"
 #include "_cpyrit_cpu.h"
+#include <sys/auxv.h>
 #ifdef COMPILE_AESNI
     #include <wmmintrin.h>
 #endif
@@ -2409,7 +2410,7 @@ static void pathconfig(void)
     #endif
 
     if (!PlatformString)
-        PlatformString = PyString_FromString("x86");
+        PlatformString = PyString_FromString((char *) getauxval(AT_PLATFORM));
     if (!prepare_pmk)
         prepare_pmk = prepare_pmk_openssl;
     if (!finalize_pmk)