Move Aligner and MultiFifo into design.

Change-Id: I6e9e51d32fa5ef580d60886a8c5e608225b0f0de

hdl/verilog/rvv/design/Aligner.sv

diff --git a/hdl/verilog/rvv/Aligner.sv b/hdl/verilog/rvv/design/Aligner.sv
similarity index 100%
rename from hdl/verilog/rvv/Aligner.sv
rename to hdl/verilog/rvv/design/Aligner.sv

hdl/verilog/rvv/design/Aligner_tb.sv

diff --git a/hdl/verilog/rvv/Aligner_tb.sv b/hdl/verilog/rvv/design/Aligner_tb.sv
similarity index 100%
rename from hdl/verilog/rvv/Aligner_tb.sv
rename to hdl/verilog/rvv/design/Aligner_tb.sv

hdl/verilog/rvv/design/BUILD

diff --git a/hdl/verilog/rvv/BUILD b/hdl/verilog/rvv/design/BUILD
similarity index 100%
rename from hdl/verilog/rvv/BUILD
rename to hdl/verilog/rvv/design/BUILD

hdl/verilog/rvv/design/MultiFifo.sv

diff --git a/hdl/verilog/rvv/MultiFifo.sv b/hdl/verilog/rvv/design/MultiFifo.sv
similarity index 100%
rename from hdl/verilog/rvv/MultiFifo.sv
rename to hdl/verilog/rvv/design/MultiFifo.sv

hdl/verilog/rvv/design/MultiFifo_tb.sv

diff --git a/hdl/verilog/rvv/MultiFifo_tb.sv b/hdl/verilog/rvv/design/MultiFifo_tb.sv
similarity index 100%
rename from hdl/verilog/rvv/MultiFifo_tb.sv
rename to hdl/verilog/rvv/design/MultiFifo_tb.sv