Check for getDmaVersion instead of s_grdma

s_grdma is a global variable and could be set
even if there is no DMA support.

Bug: 128324105
Test: make
Change-Id: I8b963fb3364bbe64779bc7d2c9e90632f3ca6700
Signed-off-by: Roman Kiryanov <rkir@google.com>
1 file changed