ARM: pxa: fix building issue of missing physmap.h

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/spitz.c

@@ -25,6 +25,7 @@
 #include <linux/spi/corgi_lcd.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/mtd/sharpsl.h>
+#include <linux/mtd/physmap.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/regulator/machine.h>
 #include <linux/io.h>