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.

(cherry picked from commit 27047faf283cb9d3d025a984cd9934fd2c404407)

Change-Id: Idf1ec67854e1eb423704e599ae1c6b674d36618d
1 file changed