powerpc: Fix up modules that should be including module.h

So that we can clean up the header files and not be relying
on implicit includes from device.h ---> module.h

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c

@@ -23,6 +23,7 @@
 #include <linux/pci.h>
 #include <linux/kdev_t.h>
 #include <linux/console.h>
+#include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/seq_file.h>