Silence two warnings

[pstef]

../libretro/libretro.cpp:1123:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
 1123 |         if ((is_bsx((uint8 *) game->data + 0x7fc0)==1) | (is_bsx((uint8 *) game->data + 0xffc0)==1)) {
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                                        ||
../libretro/libretro.cpp:1123:13: note: cast one or both operands to int to silence this warning
../libretro/libretro.cpp:1151:34: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare]
 1151 |             for(int lcv = 0; lcv < sizeof(Memory.RAM); lcv++)
      |                              ~~~ ^ ~~~~~~~~~~~~~~~~~~