global: Remove bi_sramstart/bi_sramsize

These fields are currently set on exactly two platforms today, and used
by only one of them. Update pic32mzdask to use CFG_SYS_SRAM* in the one
location it needs it and otherwise drop this field from the bd_info
struct.

Signed-off-by: Tom Rini <trini@konsulko.com>
6 files changed