According to the MSP432P4xx Family TRM (SLAU356A) Figure 4-7,
0x9AF is the part number for MSP432P401xx devices.
Verified on TI MSP-EXP432P401R LaunchPad.
Change-Id: I22b57c42f2a0dc8263fab6b480cf8c169c7dc295
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3486
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>