[PATCH] rmobile: avoid deprecated srec_cat flags

[Marek Vasut]

On 4/18/23 20:20, Ralph Siemsen wrote:
> The -l-e-constant flag has been deprecated since 2012. [1]
> Use the recommended replacement instead.
> 
> [1] https://sourceforge.net/p/srecord/code/ci/1.59.D009/
> 
> Signed-off-by: Ralph Siemsen <ralph.siemsen at linaro.org>

I'm afraid this needs some backward compatibility sreccat version check 
. Similar to GCC compiler flags presence check. To avoid breaking legacy 
users.