Correctly disable the ROM area Write Protect bit in the Geode LX.

signed-off by: Marc Jones <marc.jones@amd.com>

Index: LinuxBIOSv2/util/flashrom/chipset_enable.c
===================================================================
--- LinuxBIOSv2.orig/util/flashrom/chipset_enable.c	2008-01-24 15:13:50.000000000 -0700
+++ LinuxBIOSv2/util/flashrom/chipset_enable.c	2008-01-24 15:14:46.000000000 -0700
@@ -256,7 +256,7 @@
 	close(fd_msr);
 	if (buf[7] != 0x22) {
 		printf("Enabling Geode MSR to write to flash.\n");
-		buf[7] = 0x22;
+		buf[7] &= 0xFB; 
 		fd_msr = open("/dev/cpu/0/msr", O_WRONLY);
 		if (!fd_msr) {
 			perror("open msr");
