eXMeritus HWW-1U-1A: Minor environment variable tweaks

Most of the ethernet connections are internal links with specialized
hardware and are not useful for "dhcp" or general-purpose networking;
U-Boot should not be cycling through them.  Force the primary external
network interface in "ethprime" and disable the interface cycling with
"ethrotate=no".

Additionally, the environment variable "preboot" has its own config
option and means something entirely different from what the HWW-1U-1A
variable was intended for.  Rename the board variable to "setbootargs"
to avoid potential confusion.

Finally, fix an incorrect address for the kernel in FLASH memory.
Signed-off-by: NKyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Andy Fleming <afleming@gmail.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

include/configs/HWW1U1A.h

@@ -438,11 +438,14 @@ const char *hww1u1a_get_ps1(void);
 
 /* Extra environment parameters */
 #define CONFIG_EXTRA_ENV_SETTINGS					\
-	"preboot=setenv bootargs \"${bootargs} "CONFIG_BOOTARGS_DYNAMIC"\"\0" \
+	"ethprime=e1000#0\0"						\
+	"ethrotate=no\0"						\
+	"setbootargs=setenv bootargs "					\
+			"\"${bootargs} "CONFIG_BOOTARGS_DYNAMIC"\"\0"	\
 	"perf_mode=performance\0"					\
 	"hwconfig="	"fsl_ddr:ctlr_intlv=bank,bank_intlv=cs0_cs1;"	\
 			"usb1:dr_mode=host,phy_type=ulpi\0"		\
-	"flkernel=0xe8020000\0"						\
+	"flkernel=0xe8000000\0"						\
 	"flinitramfs=0xe8800000\0"					\
 	"fldevicetree=0xeff20000\0"					\
 	"flbootm=bootm ${flkernel} ${flinitramfs} ${fldevicetree}\0"	\