Add support for Nantronics N25 series

Add...
 - N25S10
 - N25S20
 - N25S40
 - N25S80
 - N25S16

Corresponding to flashrom svn r1683.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/spi25_statusreg.c b/spi25_statusreg.c
index e0ed690..5560f5b 100644
--- a/spi25_statusreg.c
+++ b/spi25_statusreg.c
@@ -223,10 +223,10 @@
 	msg_cdbg("Chip status register is 0x%02x.\n", status);
 }
 
-/* Common highest bit: Status Register Write Disable (SRWD). */
+/* Common highest bit: Status Register Write Disable (SRWD) or Status Register Protect (SRP). */
 static void spi_prettyprint_status_register_srwd(uint8_t status)
 {
-	msg_cdbg("Chip status register: Status Register Write Disable (SRWD) is %sset\n",
+	msg_cdbg("Chip status register: Status Register Write Disable (SRWD, SRP, ...) is %sset\n",
 		 (status & (1 << 7)) ? "" : "not ");
 }