Fix BIONIC_ROUND_UP_POWER_OF_2 for 64 bit.

There were two bugs here:

- For 64 bit values, this did not properly round up.
- The macro rounded to the power of 2 less than value, not to the power
  of 2 greater than value.

Change-Id: If8cb41536a9d2f5c1bc213676f1e67a7903a36b0
1 file changed