[PATCH] Fix RTL8019AS init for Toshiba RBTX49xx boards

   Ensure that 8-bit mode is selected for the on-board Realtek RTL8019AS chip
on Toshiba RBHMA4x00, get rid of the duplicate #ifdef's when setting
ei_status.word16.
   The chip's datasheet says that the PSTOP register shouldn't exceed 0x60 in
8-bit mode -- ensure this too.

Signed-off-by: Sergei Shtylyov <redacted>