Convert CONFIG_SPL_BSS_MAX_SIZE et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SPL_BSS_MAX_SIZE
   CONFIG_SPL_MAX_FOOTPRINT

Note that the da850evm platforms were violating the "only use one" rule
here, and so now hard-code their BSS limit.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/m53menlo_defconfig b/configs/m53menlo_defconfig
index 378b9f2..336ba01 100644
--- a/configs/m53menlo_defconfig
+++ b/configs/m53menlo_defconfig
@@ -32,6 +32,7 @@
 CONFIG_PREBOOT="run try_bootscript"
 CONFIG_BOARD_LATE_INIT=y
 CONFIG_SPL_PAD_TO=0x8000
+CONFIG_SPL_NO_BSS_LIMIT=y
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_NAND_SUPPORT=y
 CONFIG_HUSH_PARSER=y