Kconfig: Drop CONFIG_CMD_PCI_ENUM

This option enables the 'pci enum' command. It is only enabled by a few
board and these have not yet been converted to driver model, which always
enables this command. It seems easiest to just remove this option.

The affected boards can be converted to use driver model for PCI if
needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

include/configs/ds414.h

@@ -48,7 +48,6 @@
 
 /* PCIe support */
 #ifndef CONFIG_SPL_BUILD
-#define CONFIG_CMD_PCI_ENUM
 #define CONFIG_PCI_MVEBU
 #define CONFIG_PCI_SCAN_SHOW
 #endif

include/configs/xpedite517x.h

@@ -483,7 +483,6 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 /*
  * Command configuration.
  */
-#define CONFIG_CMD_PCI_ENUM
 #define CONFIG_CMD_REGINFO
 
 /*

include/configs/xpedite520x.h

@@ -286,7 +286,6 @@
 /*
  * Command configuration.
  */
-#define CONFIG_CMD_PCI_ENUM
 #define CONFIG_CMD_REGINFO
 
 /*

include/configs/xpedite537x.h

@@ -336,7 +336,6 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy);
 /*
  * Command configuration.
  */
-#define CONFIG_CMD_PCI_ENUM
 #define CONFIG_CMD_REGINFO
 
 /*

include/configs/xpedite550x.h

@@ -335,7 +335,6 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy);
 /*
  * Command configuration.
  */
-#define CONFIG_CMD_PCI_ENUM
 #define CONFIG_CMD_REGINFO
 
 /*