ARM: omap3: Set SPL stack size to 8KB, image to 54KB.

ARM: omap3: Set SPL stack size to 8KB, image to 54KB.

With older toolchains it is possible to not fit entirely into the 45KB
that we had assigned to SPL.  Adjust to allow for 8KB of stack (which
should be more than required) and 54KB of text/data.

Cc: Vaibhav Hiremath <[email protected]>
Cc: Nagendra T S <[email protected]>
Cc: Thomas Weber <[email protected]>
Cc: Ilya Yanok <[email protected]>
Cc: Steve Sakoman <[email protected]>
Cc: Stefano Babic <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
Acked-by: Stefano Babic <[email protected]>
Acked-by: Vaibhav Hiremath <[email protected]>