common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/tqc/tqm834x/pci.c b/board/tqc/tqm834x/pci.c
index 0834207..92bda607 100644
--- a/board/tqc/tqm834x/pci.c
+++ b/board/tqc/tqm834x/pci.c
@@ -13,6 +13,7 @@
 #include <pci.h>
 #include <i2c.h>
 #include <asm/fsl_i2c.h>
+#include <linux/delay.h>
 
 static struct pci_region pci1_regions[] = {
 	{
diff --git a/board/tqc/tqm834x/tqm834x.c b/board/tqc/tqm834x/tqm834x.c
index 77fe7e2..165a543 100644
--- a/board/tqc/tqm834x/tqm834x.c
+++ b/board/tqc/tqm834x/tqm834x.c
@@ -16,6 +16,7 @@
 #include <asm/mmu.h>
 #include <pci.h>
 #include <flash.h>
+#include <linux/delay.h>
 #include <mtd/cfi_flash.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/board/tqc/tqma6/tqma6_mba6.c b/board/tqc/tqma6/tqma6_mba6.c
index c5598c0..84d0e38 100644
--- a/board/tqc/tqma6/tqma6_mba6.c
+++ b/board/tqc/tqma6/tqma6_mba6.c
@@ -15,6 +15,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/sys_proto.h>
+#include <linux/delay.h>
 #include <linux/errno.h>
 #include <asm/gpio.h>
 #include <asm/mach-imx/mxc_i2c.h>
diff --git a/board/tqc/tqma6/tqma6_wru4.c b/board/tqc/tqma6/tqma6_wru4.c
index d64eff4..0488cba 100644
--- a/board/tqc/tqma6/tqma6_wru4.c
+++ b/board/tqc/tqma6/tqma6_wru4.c
@@ -17,6 +17,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/sys_proto.h>
+#include <linux/delay.h>
 #include <linux/errno.h>
 #include <asm/gpio.h>
 #include <asm/mach-imx/boot_mode.h>