Fixes the lvalue for movu.b and movu.w
Fixes the lvalue for movu.b and movu.w

As with all other mov instructions, the second address is the lvalue, the one to receive the data.
For movu.b and movu.w the first address was receiving its own data.
NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra,NationalSecurityAgency/ghidra