Fix LIR generation for long arithmetic operation

X86Mir2Lir::GenLongArith generated wrong LIR if the first argument
of the operation was promoted. It forgot to swap arguments if
the first was not temp, but the second was temp

Change-Id: I389f72f560ce9924859e17385bc8f64793c77b67
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
Signed-off-by: Yevgeny Rouban <yevgeny.y.rouban@intel.com>