msm: pcie: use log2 API to round up nvec

PCIe bus driver incorrectly rounds nvec to the next
power of 2. Use log2 API to do the rounding instead.

Change-Id: Ide3a4cb200855ac5db3d75b674ed6796e8d22c92
Signed-off-by: Tony Truong <truong@codeaurora.org>
1 file changed