mpc8641 image size cleanup

e600 does not have a bootpg restriction.
Move the version string to beginning of image at fff00000.
Resetvec.S is not needed.
Update flash copy instructions.
Add tftpflash env variable

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/board/mpc8641hpcn/config.mk b/board/mpc8641hpcn/config.mk
index 989a40b..f778dcb 100644
--- a/board/mpc8641hpcn/config.mk
+++ b/board/mpc8641hpcn/config.mk
@@ -25,7 +25,7 @@
 # default CCSRBAR is at 0xff700000
 # assume U-Boot is less than 0.5MB
 #
-TEXT_BASE = 0xfff01000
+TEXT_BASE = 0xfff00000
 
 PLATFORM_CPPFLAGS += -DCONFIG_MPC86xx=1
 PLATFORM_CPPFLAGS += -DCONFIG_MPC8641=1 -maltivec -mabi=altivec -msoft-float