utils/genrandconfig: test full set of hardening options

This patch adds the remaining ssp and relro cases plus both of the
fortify options. The randomization was left consistant between the
options but the order of the conditions placed the most restrictive
hardening options with more priority.

Cc: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

utils/genrandconfig

@@ -370,8 +370,18 @@ def gen_config(args):
         configlines.append("BR2_PIC_PIE=y\n")
     if randint(0, 4) == 0:
         configlines.append("BR2_RELRO_FULL=y\n")
+    elif randint(0, 4) == 0:
+        configlines.append("BR2_RELRO_PARTIAL=y\n")
     if randint(0, 4) == 0:
         configlines.append("BR2_SSP_ALL=y\n")
+    elif randint(0, 4) == 0:
+        configlines.append("BR2_SSP_REGULAR=y\n")
+    elif randint(0, 4) == 0:
+        configlines.append("BR2_SSP_STRONG=y\n")
+    if randint(0, 4) == 0:
+        configlines.append("BR2_FORTIFY_SOURCE_2=y\n")
+    elif randint(0, 4) == 0:
+        configlines.append("BR2_FORTIFY_SOURCE_1=y\n")
 
     # Randomly enable BR2_REPRODUCIBLE 10% of times
     # also enable tar filesystem images for testing