powerpc/qe: Move cmxgcr_lock definition from the ucc.c into the qe.c

With this patch we can compile the qe_lib/usb.c without the UCC
support (that is, without UCC_GETH and/or SERIAL_QE).

Fixes following link error (CONFIG_SMP should be =y to trigger this):

arch/powerpc/sysdev/built-in.o: In function `qe_usb_clock_set':
(.text+0x3cae): undefined reference to `cmxgcr_lock'
make: *** [.tmp_vmlinux1] Error 1

While at it, also add missing spinlock.h includes.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-By: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index b3b73ae5..01bce37 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/param.h>
 #include <linux/string.h>
+#include <linux/spinlock.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/bootmem.h>
@@ -38,6 +39,8 @@
 static int qe_sdma_init(void);
 
 static DEFINE_SPINLOCK(qe_lock);
+DEFINE_SPINLOCK(cmxgcr_lock);
+EXPORT_SYMBOL(cmxgcr_lock);
 
 /* QE snum state */
 enum qe_snum_state {