e1000: add ich8lan core functions

This implements the core new functions needed for ich8's internal
NIC. This includes:

* ich8 specific read/write code
* flash/nvm access code
* software semaphore flag functions
* 10/100 PHY (fe - no gigabit speed) support for low-end versions
* A workaround for a powerdown sequence problem discovered that
affects a small number of motherboard.
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com>

drivers/net/e1000/e1000_osdep.h

@@ -127,4 +127,17 @@ typedef enum {
 
 #define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, STATUS)
 
+#define E1000_WRITE_ICH8_REG(a, reg, value) ( \
+    writel((value), ((a)->flash_address + reg)))
+
+#define E1000_READ_ICH8_REG(a, reg) ( \
+    readl((a)->flash_address + reg))
+
+#define E1000_WRITE_ICH8_REG16(a, reg, value) ( \
+    writew((value), ((a)->flash_address + reg)))
+
+#define E1000_READ_ICH8_REG16(a, reg) ( \
+    readw((a)->flash_address + reg))
+
+
 #endif /* _E1000_OSDEP_H_ */