Cleanup the bitmap_xxx() functions in the LinuxKPI:

• Move all bitmap related functions from bitops.h to bitmap.h, similar to what Linux does.

• Apply some minor code cleanup and simplifications to optimize the generated code when using static inline functions.

• Implement the following list of bitmap functions which are needed by drm-next and ibcore:
  • bitmap_find_next_zero_area_off()
  • bitmap_find_next_zero_area()
  • bitmap_or()
  • bitmap_and()
  • bitmap_xor()

• Add missing include directives to the qlnxe driver (davidcs@ has been notified)

MFC after: 1 week
Sponsored by: Mellanox Technologies