linux-testing: Update to 4.3.0-rc2

pkgs/os-specific/linux/kernel/common-config.nix

@@ -140,7 +140,9 @@ with stdenv.lib;
 
   # Video configuration.
   # Enable KMS for devices whose X.org driver supports it.
-  DRM_I915_KMS y
+  ${optionalString (versionOlder version "4.3") ''
+    DRM_I915_KMS y
+  ''}
   # Allow specifying custom EDID on the kernel command line
   DRM_LOAD_EDID_FIRMWARE y
   ${optionalString (versionOlder version "3.9") ''
@@ -327,6 +329,7 @@ with stdenv.lib;
   SERIAL_8250 y # 8250/16550 and compatible serial support
   SLIP_COMPRESSED y # CSLIP compressed headers
   SLIP_SMART y
+  HWMON y
   THERMAL_HWMON y # Hardware monitoring support
   ${optionalString (versionAtLeast version "3.15") ''
     UEVENT_HELPER n