soc/intel/common: rewrite and clarify the Legacy 8254 Timer Kconfig

The current Kconfig help text is confusing because it talks about
enabling the Kconfig for disabling a UPD for disabling power gating.

Rewrite and clarify the help text.

Change-Id: I9637c549db1ce29f259708f316852fc2ae9e7c38
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46302
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions