axs101: increase EEPROM page write delay from 32 to 64 msec

With 32 milliseconds delay on some boards EEMPROM got written inconsistently.
With 64 msec all of our existig boards show properly written EEPROM.

Cc: Tom Rini <trini@ti.com>

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>