The <common.h> includes too many headers. Actually, these files
needed to include it for udelay() declaration. Now we can replace
it with <linux/delay.h> thanks to commit 5bc516ed66 ("delay:
collect {m, n, u}delay declarations to include/linux/delay.h").
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The PLL for the DRAM interface must be initialized in SPL, but the
others can be delayed until U-Boot proper. Move them from SPL to
U-Boot proper to save the precious SPL memory footprint.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>