mb/intel/d410pt: Add mainboard

This board is almost identical to D510MO, the only differences are
some differences in populated connections, CPU with less L2 cache and
a 10/100 Realtek NIC.

The vendor uses the very same binary for both D510M0 and D410PT.

Change-Id: I220515365b69e785ef249c4e3a9af5f7fddf02f9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/20000
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/intel/d510mo/Kconfig.name

@@ -1,2 +1,2 @@
 config BOARD_INTEL_D510MO
-	bool "D510MO"
+	bool "D510MO / D410PT"