cnss2: cnss changes for sun compilation

Current code has compilation errors
when compiling for sun. sched_clock()
was moved to clock.h, and iommu_map API
was changed with new sun kernel. Fix
this by updating code for new kernel
apis.

Change-Id: I77029fcc74142f3f650dc289c8d19c121eba6445
CRs-Fixed: 3603129

wlan_platform_modules.bzl

@@ -9,7 +9,7 @@ _default_module_enablement_list = [
     "wlan_firmware_service"
 ]
 
-_cnss2_enabled_target = ["pineapple"]
+_cnss2_enabled_target = ["pineapple", "sun"]
 _icnss2_enabled_target = ["blair", "pineapple"]
 
 def _get_module_list(target, variant):