Interfacing Analog signal to FPGA?
Yes the pin is called "ADC_xx" but as Richard pointed out it doesn't appear anywhere in the documentation. Note though in the "connects to" column there it says they connect to the FDDR and GPIO pins. My guess is that the naming convention is standard across their breadboard areas and it's part of some scheme to help developers keep consistent across their pin-out constraint files (maybe). Microsemi also has the "Fusion Mixed Signal" FPGA and their original smart fusion FPGA's which probably uses the same breadboard area on their dev kits and possibly the same board layout if the pin-outs align for dedicated lines like power or programming. 

Note there is a huge difference in their product lines. From this EE times article


  The SmartFusion2 product range is built on 65nm Flash technology and biased heavily toward security and defense applications. Analog components have been replaced with crypto cores. 


Two side notes

1) I'd recommend finding those pins on the pinout sheet but when I tried to search for it I got a "file not found" notice. This is a big warning sign and you may want to contact their Application Engineers to see if its being supported.

2) 


  I am a newby in this and I do not know a lot about I/O standards and interfacing signals


Application notes are your friend. Learn about the basic standards like GPIO or LVDS and things like SPI booting and JTAG. Also remember that on an FPGA or MCU's, especially smaller packages, pins can share functionality such as boot serial pins with GPIO so extra care is needed at the board level to protect the dual functionality and settings in the constraint files. 

SoC is all this confusion with the nightmare of fancy busses. When you are looking at these dev kit pin-outs compare them directly to the specific pin-out of the IC you're using (see point 1)