CMD: Remove CMD_LOG, it's unused

$ git grep CMD_LOG
include/configs/kilauea.h:#define CONFIG_CMD_LOG
include/configs/lwmon5.h:#define CONFIG_CMD_LOG
include/configs/makalu.h:#define CONFIG_CMD_LOG
include/configs/quad100hd.h:#undef CONFIG_CMD_LOG
include/configs/zeus.h:#define CONFIG_CMD_LOG

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/configs/kilauea.h b/include/configs/kilauea.h
index 621dbb8..d505a41 100644
--- a/include/configs/kilauea.h
+++ b/include/configs/kilauea.h
@@ -447,7 +447,6 @@
  */
 #define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DATE
-#define CONFIG_CMD_LOG
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_PCI
 #define CONFIG_CMD_SNTP
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index a6f2864..68215fd 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -435,7 +435,6 @@
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_I2C
 #define CONFIG_CMD_IRQ
-#define CONFIG_CMD_LOG
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_NET
 #define CONFIG_CMD_NFS
diff --git a/include/configs/makalu.h b/include/configs/makalu.h
index fcc789d..6c1b136 100644
--- a/include/configs/makalu.h
+++ b/include/configs/makalu.h
@@ -252,7 +252,6 @@
  */
 #define CONFIG_CMD_DATE
 #define CONFIG_CMD_DTT
-#define CONFIG_CMD_LOG
 #define CONFIG_CMD_PCI
 #define CONFIG_CMD_SNTP
 
diff --git a/include/configs/quad100hd.h b/include/configs/quad100hd.h
index dc5ec3a..5d0c385 100644
--- a/include/configs/quad100hd.h
+++ b/include/configs/quad100hd.h
@@ -69,7 +69,6 @@
 #define CONFIG_CMD_I2C
 #undef CONFIG_CMD_IRQ
 #define CONFIG_CMD_JFFS2
-#undef CONFIG_CMD_LOG
 #undef CONFIG_CMD_MII
 #define CONFIG_CMD_NAND
 #undef CONFIG_CMD_PING
diff --git a/include/configs/zeus.h b/include/configs/zeus.h
index 63279b0..2556e3b 100644
--- a/include/configs/zeus.h
+++ b/include/configs/zeus.h
@@ -78,7 +78,6 @@
 #define CONFIG_CMD_ELF
 #define CONFIG_CMD_I2C
 #define CONFIG_CMD_IRQ
-#define CONFIG_CMD_LOG
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_NET
 #define CONFIG_CMD_NFS