kernel: drop CONFIG_PROC_DEVICETREE in 3.18

This option was removed in upstream commit 8357041.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 43607

target/linux/generic/config-3.18

@@ -2880,7 +2880,6 @@ CONFIG_PRINT_STACK_DEPTH=64
 # CONFIG_PRISM2_USB is not set
 # CONFIG_PRISM54 is not set
 # CONFIG_PROBE_INITRD_HEADER is not set
-# CONFIG_PROC_DEVICETREE is not set
 CONFIG_PROC_FS=y
 # CONFIG_PROC_KCORE is not set
 # CONFIG_PROC_PAGE_MONITOR is not set

target/linux/mvebu/config-3.18

@@ -257,7 +257,6 @@ CONFIG_PJ4B_ERRATA_4742=y
 # CONFIG_PL310_ERRATA_769419 is not set
 CONFIG_PLAT_ORION=y
 # CONFIG_PREEMPT_RCU is not set
-CONFIG_PROC_DEVICETREE=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RFS_ACCEL=y
 CONFIG_RPS=y

target/linux/sunxi/config-3.18

@@ -384,7 +384,6 @@ CONFIG_PREEMPT_COUNT=y
 CONFIG_PREEMPT_RCU=y
 CONFIG_PRINTK_TIME=y
 # CONFIG_PRINT_QUOTA_WARNING is not set
-CONFIG_PROC_DEVICETREE=y
 CONFIG_PROC_EVENTS=y
 CONFIG_PROC_PAGE_MONITOR=y
 CONFIG_PROC_PID_CPUSET=y