powerpc: mpc8xx: Add SMC relocation CPM microcode

In order to use QMC mode in the CPM, a SCC requires more space
in parameter RAM.

After SCC1 there is I2C parameter RAM and after SCC2 there is
SPI parameter RAM. MPC866 and MPC885 can already relocate I2C and.
SPI parameter RAM.

But in order to free space after SCC3 and SCC4, SMC1 and SMC2
need to be relocated. In order to do so, a CPM microcode patch
is required.

Binary data for that patch is copied from Linux kernel.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>