Replace pinKeyToLetter with a C implementation, minor cleanup

source/patches.c

@@ -216,7 +216,7 @@ void applyLegacyFirmPatches(u8 *pos, FirmwareType firmType)
 
 void patchTwlBg(u8 *pos)
 {
-    u8 *dst = pos + (isN3DS ?  0xFEA4 : 0xFCA0);
+    u8 *dst = pos + (isN3DS ? 0xFEA4 : 0xFCA0);
 
     memcpy(dst, twl_k11modules, twl_k11modules_size); //Install K11 hook
     

source/pin.c

@@ -39,7 +39,7 @@ static char pinKeyToLetter(u32 pressed)
     const char keys[] = "AB--------XY";
 
     u32 i;
-    __asm__ volatile("clz %[i], %[pressed]" : [i] "=r" (i) : [pressed] "r" (pressed));
+    for(i = 31; pressed > 1; i--) pressed /= 2;
 
     return keys[31 - i];
 }