blk: Make use of CONFIG_HAVE_BLOCK_DEVICE more

When we do not have CONFIG_BLK (or SPL/TPL) enabled there are very few
cases where we need the blk_legacy code linked in. To catch these, build
when we have CONFIG_HAVE_BLOCK_DEVICE set.  In addition, we only need
cmd/blk_common.o to be linked in when we have CONFIG_HAVE_BLOCK_DEVICE
set, so make use of that directly.
Signed-off-by: NTom Rini <trini@konsulko.com>

cmd/Makefile

@@ -15,7 +15,7 @@ obj-$(CONFIG_CMD_AES) += aes.o
 obj-$(CONFIG_CMD_AB_SELECT) += ab_select.o
 obj-$(CONFIG_CMD_ADC) += adc.o
 obj-$(CONFIG_CMD_ARMFLASH) += armflash.o
-obj-y += blk_common.o
+obj-$(CONFIG_HAVE_BLOCK_DEVICE) += blk_common.o
 obj-$(CONFIG_CMD_SOURCE) += source.o
 obj-$(CONFIG_CMD_BCB) += bcb.o
 obj-$(CONFIG_CMD_BDI) += bdinfo.o

cmd/blk_common.c

@@ -11,7 +11,6 @@
 #include <common.h>
 #include <blk.h>
 
-#ifdef CONFIG_HAVE_BLOCK_DEVICE
 int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
 		   int *cur_devnump)
 {
@@ -96,4 +95,3 @@ int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
 		}
 	}
 }
-#endif

drivers/block/Makefile

@@ -6,7 +6,7 @@
 obj-$(CONFIG_$(SPL_)BLK) += blk-uclass.o
 
 ifndef CONFIG_$(SPL_)BLK
-obj-y += blk_legacy.o
+obj-$(CONFIG_HAVE_BLOCK_DEVICE) += blk_legacy.o
 endif
 
 ifndef CONFIG_SPL_BUILD