SODIMM 47 (GPIO7) issue on Colibri PXA310

Do not use GPIO 7 (SODIMM pin 47) on Colibri PXA310 with alternate function GPIO

Reason: GPIO7_2 is already used as GPIO on the module. Using GPIO7 as GPIO would lead to wrong behavior of the GPIO7_2 on the module. SODIMM pin 47 can be used with any alternate function other than GPIO.