Add an optional flash port parameter for IT87* SPI controllers in standalone programmer mode

If the parameter is set, the IT87* SPI driver will set the I/O base
port of the IT87* SPI controller interface to the port specified in the
parameter. Usage: flashrom -p it87spi=port=0x820

Corresponding to flashrom svn r646.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/flash.h b/flash.h
index 9e6ca6c..8783032 100644
--- a/flash.h
+++ b/flash.h
@@ -479,6 +479,7 @@
 int ich_spi_write_256(struct flashchip *flash, uint8_t * buf);
 
 /* it87spi.c */
+extern char *it87opts;
 extern uint16_t it8716f_flashport;
 void enter_conf_mode_ite(uint16_t port);
 void exit_conf_mode_ite(uint16_t port);