kernel: update .gitignore

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

kernel/.gitignore

@@ -2,6 +2,8 @@
 Module.symvers
 modules.order
 *.mod.c
+*.mod.d
+*.tmp
 .*.cmd
 .tmp_versions
-.*.o.d
\ No newline at end of file
+.*.o.d