README.hardware: Update mpc8315 load address

The kernel size has grown to a point where the original load address might not work
due to memory region overlap. This updates the instructions to use larger memory
addresses which avoids the problem.

[YOCTO #2430]

(From meta-yocto rev: 0d1949a9ca62f33a32671e57625ad14eb9221423)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

README.hardware

@@ -308,9 +308,9 @@ Load the kernel and dtb (device tree blob), and boot the system as follows:
 
  5. Download the kernel and dtb, and boot:
 
- => tftp 800000 uImage-mpc8315e-rdb.bin
- => tftp 780000 uImage-mpc8315e-rdb.dtb
- => bootm 800000 - 780000
+ => tftp 1000000 uImage-mpc8315e-rdb.bin
+ => tftp 2000000 uImage-mpc8315e-rdb.dtb
+ => bootm 1000000 - 2000000
 
 
 Ubiquiti Networks RouterStation Pro (routerstationpro)