Documentation/Intel/Board: Add analog switch link

Add link for TI TS5A23159 specification.

TEST=None

Change-Id: I2756ded963fc7597e4db1fa151bf62630b1108d9
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15003
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed