board: tablet: usb: enable HSIC

This patch is needed together with next Tablet2 HW modification

1) replace USB2640 by USB4640
2) change resistor strapping as follow:
	- Install R227, R228, R247, R248, R271, R276, R323, and L22
	- DNI: R213, R214, R237, R238, R255, R256, R319 and L21
3) modification for reset ability:
	- DNI R322
	- solder a wire from U65.5 to U72.2
4) S1 switches: 7 - OFF, 8 - ON

Change-Id: I8937c65d22026bc4d4365b0070e25bcb33bc3a89
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@ti.com>