boards: em_starterkit: fix the board default config

Change TICKS_PER_SEC from 1000 to 100
* em_starterkit is a FPGA board with cores running at max 30 Mhz.
  1000 ticks per second is a little heavy for it.
* the tests/kernel/common requires 200 ticks per second at most,
  or the testcase will stall.

disable the generation of bin file.
* there is no flash in em_starterkit
* there is huge gap between ICCM and DCCM which will cause the bin
  file too large, alomst 2GB

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>