boards: imx93_evk: refine jlink runner

The ogirnal design is using a J-Link script, then the path of image
is saved into the script file during building, it will has issue
when generate twister artifacts and copy it to another path for
testing as path is changed. so refine it to use new parameter of
J-Link runner parameter "--flash-sram" to fix this issue.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>