[pattgen,SiVal] Add features to pattgen.hjson

I've split the features of the pattern generator into three groups:
channel, config and complete. The final feature did not really fit in
the other two, so it has its own group. We can use this feature list to
make sure that we test all major features of the block during silicon
validation.

Signed-off-by: Marno van der Maas <[email protected]>

hw/ip/pattgen/data/pattgen.hjson

@@ -64,6 +64,29 @@
       local:   "true"
     }
   ],
+  features: [
+    { name: "PATTGEN.CHANNEL.ONE",
+      desc: "Pattern generator can generate patterns on two separate channels, this is the first one."
+    },
+    { name: "PATTGEN.CHANNEL.TWO",
+      desc: "Pattern generator can generate patterns on two separate channels, this is the second one."
+    },
+    { name: "PATTGEN.CONFIG.PATTERN",
+      desc: "Each channel can be programmed with a pattern with a length of between 1 and 64 bits, inclusive."
+    },
+    { name: "PATTGEN.CONFIG.DIVIDER",
+      desc: "Each channel has an independent clock divider."
+    },
+    { name: "PATTGEN.CONFIG.REPEAT",
+      desc: "Each channel can be configured to repeat the pattern up to 1024 times."
+    },
+    { name: "PATTGEN.CONFIG.POLARITY",
+      desc: "Each channel's clock can be inverted."
+    },
+    { name: "PATTGEN.COMPLETE",
+      desc: "Once a pattern is finished, an interrupt is raised."
+    }
+  ],
   countermeasures: [
     { name: "BUS.INTEGRITY",
       desc: "End-to-end bus integrity scheme."