device,AXI4RAM: support burst write

noop,Cache: support burst write

device,AXI4RAM: support burst read

noop,Cache: support burst read

noop,Cache: use AXI4 master

gpu: support burst read for metaData channel

gpu: split into two master ports

* also add a new uncached channel for GPU metadata

fpga,zedboard: add gpu and run videotest successfully

test,NOOPTester: modify the address of framebuffer to match fpga

gpu: use AXI4 for the master port

device,AXI4Slave: add extra field to the bundle

bus,axi4,AXI4: add dataBits as bundle parameter

noop,NOOP: modify address space

device,AXI4RAM: do not write if the address is out-of-bound

bus,simplebus,ToAXI4: use BoolStopWatch

test,top,SimMMIO: modify device address to match FPGA

device,VGA: rename to AXI4VGA

device,VGA: add VGA control registers

bus,axi4: refactor code

device,AXI4RAM: fix typo

device: add AXI4Slave to refactor code

device: use BoolStopWatch for axi slave

device,AXI4RAM: refactor index calculation

device,VGA: add frame buffer

bus,axi4,AXI4RAM: move to device package