Fix compilation fail for ixp4xx platforms for the case when CONFIG_IXP4XX_INDIRECT_PCI is set. That is due to the check_signature() is appeared in include/linux/io.h.
Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 #define memcpy_fromio(a,c,l)           _memcpy_fromio((a),(c),(l))
 #define memcpy_toio(c,a,l)             _memcpy_toio((c),(a),(l))
 
-static inline int
-check_signature(const unsigned char __iomem *bus_addr, const unsigned char *signature,
-               int length)
-{
-       int retval = 0;
-       do {
-               if (readb(bus_addr) != *signature)
-                       goto out;
-               bus_addr++;
-               signature++;
-               length--;
-       } while (length);
-       retval = 1;
-out:
-       return retval;
-}
-
 #endif
 
 #ifndef CONFIG_PCI