[U-Boot] [U-Boot, v4, 09/32] tpm: prepare introduction of TPMv2.x support in Kconfig

[Tom Rini]

On Tue, May 15, 2018 at 11:57:05AM +0200, Miquel Raynal wrote:

> Because both major revisions are not compatible at all, let's make them
> mutually exclusive in Kconfig. This way we will be sure, when using a
> command or a library function that it is supported by the right
> revision.
> 
> Current drivers are currently prefixed by "tpm_", we will prefix TPMv2.x
> files by "tpm2_" to make the distinction without moving everything.
> 
> The Kconfig menu about TPM drivers is now divided into two sections, one
> for each specification. Compliant drivers with one specification will
> only show up if this specification _only_ has been selected, otherwise a
> comment is displayed.
> 
> Once a driver is selected by the user, it selects automatically a
> boolean value, that is needed in order to activate the TPM commands.
> Selecting the TPM commands will automatically select the right
> command/library files.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Tom Rini <trini at konsulko.com>

There was a thinko in here that I noticed when building for everything,
that I have fixed.  Both TPM_V1 and TPM_V2 need to depend on TPM (which
comes from lib/Kconfig) otherwise we would start building TPMv1 support
for all platforms.  I also ended up dropping out TPM_DRIVER_SELECTED and
instead making CMD_TPM depend on TPM_V1 || TPM_V2 as that ended up being
a cleaner way to deal with the gdsys boards with TPM but without a
dedicated driver exactly.  With that fixed:

Applied to u-boot/master, thanks!

-- 
Tom
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