ARM: UniPhier: detect the number of flash banks at run-time

Some UniPhier boards are equipped with an expansion slot that
some optional SRAM/NOR-flash cards can be attached to.  So, run-time
detection of the number of flash banks would be more user-friendly.

Until this commit, UniPhier boards have achieved this by (ab)using
board_flash_wp_on() because the boot failed if flash_size got zero.
Fortunately, this problem was solved by commit 70879a92561a (flash:
do not fail even if flash_size is zero).

Now it is possible to throw away such a tricky workaround.  This
commit also enables CONFIG_SYS_MAX_FLASH_BANKS_DETECT for further
refactoring.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h
index 733e6fa..dd022fb 100644
--- a/include/configs/uniphier.h
+++ b/include/configs/uniphier.h
@@ -92,6 +92,7 @@
 
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_BOARD_EARLY_INIT_R
 #define CONFIG_BOARD_LATE_INIT
 
 #define CONFIG_SYS_MALLOC_LEN		(4 * 1024 * 1024)
@@ -121,17 +122,7 @@
 
 #define CONFIG_FLASH_SHOW_PROGRESS	45 /* count down from 45/5: 9..1 */
 
-#if defined(CONFIG_PFC_MICRO_SUPPORT_CARD)
-# define CONFIG_SYS_MAX_FLASH_BANKS	1
-# define CONFIG_SYS_FLASH_BANKS_LIST	{0x00000000}
-# define CONFIG_SYS_FLASH_BANKS_SIZES	{0x02000000}
-#endif
-
-#if defined(CONFIG_DCC_MICRO_SUPPORT_CARD)
-# define CONFIG_SYS_MAX_FLASH_BANKS	1
-# define CONFIG_SYS_FLASH_BANKS_LIST	{0x04000000}
-# define CONFIG_SYS_FLASH_BANKS_SIZES	{0x04000000}
-#endif
+#define CONFIG_SYS_MAX_FLASH_BANKS_DETECT 2
 
 /* serial console configuration */
 #define CONFIG_BAUDRATE			115200