bug fix for 83xx and common

Hello Kim and Wolfgang,

Because Kim's tree has not update from main tree, so I'm based on the main tree.

Kim, could you pick up these patch to your tree? if you can not, Wolfgang, would you like merge to main tree?

Thanks,
Dave

The following changes since commit
422b1a01602b6e2fbf8444a1192c7ba31461fd4c

of http://www.denx.de/git/u-boot.git

[PATCH 1/8] common: Suppress the warning 'p_buf' [PATCH 2/8] mpc83xx: Remove cache config from config.h [PATCH 3/8] mpc83xx: Fix the typo in global data struct [PATCH 4/8] mpc83xx: Fix the typo in mpc83xx.h [PATCH 5/8] mpc83xx: Fix the wrong definition of MPC8315E [PATCH 6/8] mpc83xx: Reduce the latency of DDR [PATCH 7/8] mpc83xx: Make the code more readable [PATCH 8/8] mpc83xx: Fix the bug of 266MHz data rate DDR

I'll get them, since I have others I'd like WD to apply.

Kim