Remove unused/undeclared arm assembly macro parameters

The SAD_VAR_16_END macro only takes 3 parameters, never 4,
and SAD_SSD_16_END never is called with more than 3 parameters
either.
Rerun mktargets.sh

This fixes inconsistent indentation of one line, caused by
manually editing one of the targets.mk files.
Merge pull request #441 from mstorsjo/remove-stray-macro-parameters

Remove unused/undeclared arm assembly macro parameters
Merge pull request #443 from mstorsjo/rerun-mktargets

Rerun mktargets.sh