[ssdk-shell]Add psgmii register access commands

Add psgmii register access command to read/write
psgmii module register.

Change-Id: I8c80c260882788d7fa2dfaa81fe031090f886ecc
Signed-off-by: Zou Shunxiang <shunxian@codeaurora.org>
7 files changed
tree: bec0e783c45243efc298d88c0674788ce530fcd2
  1. include/
  2. make/
  3. src/
  4. config
  5. Makefile