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/drivers/video/lg4573.c b/drivers/video/lg4573.c
index 8b458e2..45df9c1 100644
--- a/drivers/video/lg4573.c
+++ b/drivers/video/lg4573.c
@@ -15,6 +15,7 @@
 #include <errno.h>
 #include <spi.h>
 #include <asm/gpio.h>
+#include <linux/delay.h>
 
 #define PWR_ON_DELAY_MSECS  120