Move LDSCRIPT definitions to board config files.

Move LDSCRIPT definitions to board config files.

Recent cleanup actions resulted in a number of config.mk files that
contained only LDSCRIPT definitions.  Move these into th respective
board config files and remove the now empty config.mk files.

Signed-off-by: Wolfgang Denk <[email protected]>
Cc: Matthias Fuchs <[email protected]>
Cc: Detlev Zundel <[email protected]>
Cc: Heiko Schocher <[email protected]>
Cc: Andre Schwarz <[email protected]>
Cc: Peter De Schrijver <[email protected]>
Acked-by: Detlev Zundel < [email protected]>
Acked-by: Andre Schwarz <[email protected]>
Acked-by: Heiko Schocher<[email protected]>
Acked-by: Matthias Fuchs <[email protected]>