Draco is a family of 3 boards: thuban, rastaban & etamin. Rename all
targets of the family adding the draco- prefix to increase readibility
and simplify future commits about concerning all boards of the family.

The name draco was initially used for the first target. It's deprecated
since a 2nd target was introduced. Unfortunately the draco target was
copied to the thuban target instead to be renamed. Remove it to save
unnecessary maintenance effort.

Signed-off-by: Enrico Leto <enrico.leto@siemens.com>

Replace instances of http://www.ti.com with https://www.ti.com

Signed-off-by: Nishanth Menon <nm@ti.com>

Perform a simple rename of CONFIG_MAX_RAM_BANK_SIZE to CFG_MAX_RAM_BANK_SIZE

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

Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

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

Perform a simple rename of CONFIG_ENV_SETTINGS_V2 to CFG_ENV_SETTINGS_V2

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

Perform a simple rename of CONFIG_ENV_SETTINGS_NAND_V2 to CFG_ENV_SETTINGS_NAND_V2

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

Perform a simple rename of CONFIG_ENV_SETTINGS_BUTTONS_AND_LEDS to CFG_ENV_SETTINGS_BUTTONS_AND_LEDS

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

This converts the following to Kconfig:
   CONFIG_ENV_RANGE

Now that this is in Kconfig we can enforce a minimum size and so remove
the check in C code to ensure range is larger than size.

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

With the exception of how PowerPC handles SPL and TPL (which has its own
issues), we cannot safely hide options under CONFIG_SPL_BUILD.  Largely
remove the places that have this test today.

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

Introduce board/siemens/common/Kconfig and have it hold FACTORYSET to
start with.  Use select for this on the boards that need it.

Cc: Anatolij Gustschin <agust@denx.de>
Cc: Samuel Egli <samuel.egli@siemens.com>
Signed-off-by: Tom Rini <trini@konsulko.com>