configs: keystone2: Do not include hardware.h

This is a hacky way to have this file included in all source files that
include common.h, instead just include from the files that need it.

Signed-off-by: Andrew Davis <afd@ti.com>

drivers/memory/ti-aemif.c

@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <asm/arch/hardware.h>
 #include <asm/ti-common/ti-aemif.h>
 
 #define AEMIF_WAITCYCLE_CONFIG		(KS2_AEMIF_CNTRL_BASE + 0x4)

drivers/soc/ti/keystone_serdes.c

@@ -8,6 +8,7 @@
 
 #include <errno.h>
 #include <common.h>
+#include <asm/io.h>
 #include <asm/ti-common/keystone_serdes.h>
 #include <linux/bitops.h>
 

include/configs/ti_armv7_keystone2.h

@@ -52,7 +52,6 @@
 #include <configs/ti_armv7_common.h>
 
 /* we may include files below only after all above definitions */
-#include <asm/arch/hardware.h>
 #include <asm/arch/clock.h>
 #ifndef CONFIG_SOC_K2G
 #define CFG_SYS_HZ_CLOCK		ks_clk_get_rate(KS2_CLK1_6)