Convert CONFIG_CONSOLE_SCROLL_LINES to Kconfig

This converts the following to Kconfig:
   CONFIG_CONSOLE_SCROLL_LINES

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/evb_px5.h b/include/configs/evb_px5.h
index e930420..ed801dd 100644
--- a/include/configs/evb_px5.h
+++ b/include/configs/evb_px5.h
@@ -8,7 +8,6 @@
 
 #include <configs/rk3368_common.h>
 
-#define CONFIG_CONSOLE_SCROLL_LINES	10
 #define CONFIG_SYS_MMC_ENV_DEV 0
 
 #endif
diff --git a/include/configs/evb_rk3308.h b/include/configs/evb_rk3308.h
index 4d40606..0d2cb21 100644
--- a/include/configs/evb_rk3308.h
+++ b/include/configs/evb_rk3308.h
@@ -14,7 +14,5 @@
 #define ROCKCHIP_DEVICE_SETTINGS \
 			"stdout=serial,vidconsole\0" \
 			"stderr=serial,vidconsole\0"
-#undef CONFIG_CONSOLE_SCROLL_LINES
-#define CONFIG_CONSOLE_SCROLL_LINES            10
 
 #endif
diff --git a/include/configs/evb_rk3328.h b/include/configs/evb_rk3328.h
index ed5888b..26687e6 100644
--- a/include/configs/evb_rk3328.h
+++ b/include/configs/evb_rk3328.h
@@ -12,6 +12,4 @@
 
 #define SDRAM_BANK_SIZE			(2UL << 30)
 
-#define CONFIG_CONSOLE_SCROLL_LINES		10
-
 #endif
diff --git a/include/configs/firefly_rk3308.h b/include/configs/firefly_rk3308.h
index 2cc7b4a..7b8b62f 100644
--- a/include/configs/firefly_rk3308.h
+++ b/include/configs/firefly_rk3308.h
@@ -14,7 +14,5 @@
 #define ROCKCHIP_DEVICE_SETTINGS \
 			"stdout=serial,vidconsole\0" \
 			"stderr=serial,vidconsole\0"
-#undef CONFIG_CONSOLE_SCROLL_LINES
-#define CONFIG_CONSOLE_SCROLL_LINES            10
 
 #endif
diff --git a/include/configs/geekbox.h b/include/configs/geekbox.h
index 91f4feb..4b12eb7 100644
--- a/include/configs/geekbox.h
+++ b/include/configs/geekbox.h
@@ -8,6 +8,4 @@
 
 #include <configs/rk3368_common.h>
 
-#define CONFIG_CONSOLE_SCROLL_LINES		10
-
 #endif
diff --git a/include/configs/sheep_rk3368.h b/include/configs/sheep_rk3368.h
index 238838f..550597c 100644
--- a/include/configs/sheep_rk3368.h
+++ b/include/configs/sheep_rk3368.h
@@ -13,6 +13,4 @@
 #define DTB_LOAD_ADDR			0x5600000
 #define INITRD_LOAD_ADDR		0x5bf0000
 
-#define CONFIG_CONSOLE_SCROLL_LINES	10
-
 #endif