android: pan/bi: fix typo in bifrost_gen_disasm.c gen rules

Gen rules were erroneusly named as bifrost_gen_disasm*s*
This patch fixes them

Fixes: 792b5171 ("android: pan/bi: Use new disassembler")
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <!6873>