microblaze: Move architecture to use generic board init

Compile code with -fPIC to get GOT. Do not build SPL
with fPIC because it increasing SPL size for nothing.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/include/asm/config.h

@@ -7,4 +7,12 @@
 #ifndef _ASM_CONFIG_H_
 #define _ASM_CONFIG_H_
 
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_NEEDS_MANUAL_RELOC
+#endif
+
+#define CONFIG_NR_DRAM_BANKS	1
+#define CONFIG_SYS_GENERIC_BOARD
+#define CONFIG_SYS_GENERIC_GLOBAL_DATA
+
 #endif

arch/microblaze/include/asm/u-boot.h

@@ -16,16 +16,7 @@
 #ifndef _U_BOOT_H_
 #define _U_BOOT_H_
 
-typedef struct bd_info {
-	unsigned long	bi_memstart;	/* start of DRAM memory */
-	phys_size_t	bi_memsize;	/* size	 of DRAM memory in bytes */
-	unsigned long	bi_flashstart;	/* start of FLASH memory */
-	unsigned long	bi_flashsize;	/* size	 of FLASH memory */
-	unsigned long	bi_flashoffset; /* reserved area for startup monitor */
-	unsigned long	bi_sramstart;	/* start of SRAM memory */
-	unsigned long	bi_sramsize;	/* size	 of SRAM memory */
-	ulong		bi_boot_params; /* where this board expects params */
-} bd_t;
+#include <asm-generic/u-boot.h>
 
 /* For image.h:image_check_target_arch() */
 #define IH_ARCH_DEFAULT IH_ARCH_MICROBLAZE