Fix DQ to exact level when doing memtester by argument fix_bit and
fix_level.
Change-Id: I4b67b5e499f3e0c4d500d658bc05574f5e50543a
Signed-off-by: Tang Yun ping <typ@rock-chips.com>
1. Moving some common code to ddr_tester_common.c to share with ddr tool.
2. io_map.c get dram bandwidth by using get_ddr_bw().
Change-Id: I90641f35c4474846a2357f4959415bfaa6230769
Signed-off-by: Tang Yun ping <typ@rock-chips.com>