Move mips1 tests to test/MC/Disassembler/Mips/mips1

This matches the pattern of the mips2 and 3 tests, as well as our normal
conventions.

llvm-svn: 224254

diff --git a/llvm/test/MC/Disassembler/mips1/valid-mips1-el.txt b/llvm/test/MC/Disassembler/Mips/mips1/valid-mips1-el.txt
similarity index 100%
rename from llvm/test/MC/Disassembler/mips1/valid-mips1-el.txt
rename to llvm/test/MC/Disassembler/Mips/mips1/valid-mips1-el.txt

diff --git a/llvm/test/MC/Disassembler/mips1/valid-mips1.txt b/llvm/test/MC/Disassembler/Mips/mips1/valid-mips1.txt
similarity index 100%
rename from llvm/test/MC/Disassembler/mips1/valid-mips1.txt
rename to llvm/test/MC/Disassembler/Mips/mips1/valid-mips1.txt

diff --git a/llvm/test/MC/Disassembler/mips1/valid-xfail.txt b/llvm/test/MC/Disassembler/Mips/mips1/valid-xfail.txt
similarity index 100%
rename from llvm/test/MC/Disassembler/mips1/valid-xfail.txt
rename to llvm/test/MC/Disassembler/Mips/mips1/valid-xfail.txt