Fix GenArithOpInt to work with RA correctly

In a case of mul-int/2addr bytecode when source operand is in
memory implementation should first load value of destination
and then evaluate location for destination. Otherwise load will
be skipped because after evaluation of physical register for
destination load will be ignored due to register allocator
thinks that value is already in register.

Change-Id: Iecee5a07d0fba16b421b8c49d42c5d8623794ad7
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>