kms_flip: fix seq_step for 2xcrtc subtests
kms_flip: fix seq_step for 2xcrtc subtests

This also raises the absolute wait-for-vblank sequence step from 5 to
10, just to make it consistent with the corresponding 1x subtests.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69161
Signed-off-by: Imre Deak <fbd5edba1988036c8923f0cca0cce6ac4811db29@intel.com>
Reviewed-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

yipdw/intel-gpu-tools,erikarn/intel-gpu-tools,tiagovignatti/intel-gpu-tools,yipdw/intel-gpu-tools,rib/intel-gpu-tools,dlespiau/checkmate-test-igt,yipdw/intel-gpu-tools,erikarn/intel-gpu-tools,tiagovignatti/intel-gpu-tools,rib/intel-gpu-tools,yipdw/intel-gpu-tools,dlespiau/checkmate-test-igt,tiagovignatti/intel-gpu-tools,erikarn/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/checkmate-test-igt,mv0/intel-gpu-tools,chenxianqin/intel-gpu-tools,mv0/intel-gpu-tools,rib/intel-gpu-tools,dlespiau/checkmate-test-igt,mv0/intel-gpu-tools,tiagovignatti/intel-gpu-tools,erikarn/intel-gpu-tools,mv0/intel-gpu-tools,rib/intel-gpu-tools,chenxianqin/intel-gpu-tools,chenxianqin/intel-gpu-tools