ipq40xx: make sure that the cache flush instruction gets complete

Adding the DSB/ISB instructions in the dcache flush functions
 to make sure that the cache flush instruction gets completed
before another instruction executes.

Change-Id: I0bc2222cb040a96cc7413586b9131904bd5d1167
Signed-off-by: sameeruddin shaik <samesh@codeaurora.org>
1 file changed