Kconfig: Do not "select OF_SEPARATE"

As the code is today, we get a warning about "select" statements on
"choice" options not doing anything. In the case of OF_SEPARATE this is
the default so we do not need to do anything here normally to enforce
this.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3ed829e..b7311d3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -655,7 +655,6 @@
 	select SPL_TIMER if SPL
 	select TIMER if !ARM64
 	select OF_CONTROL
-	select OF_SEPARATE
 	select SPI
 	imply CMD_DM
 
@@ -1117,7 +1116,6 @@
 	select GPIO_EXTRA_HEADER
 	select MSM_SMEM
 	select OF_CONTROL
-	select OF_SEPARATE
 	select SMEM
 	select SPMI
 	select BOARD_LATE_INIT
@@ -1194,7 +1192,6 @@
 	select DM_SERIAL
 	select OF_BOARD_SETUP
 	select OF_CONTROL
-	select OF_SEPARATE
 	select PINCTRL
 	select SPECIFY_CONSOLE_INDEX
 	select SPL_SEPARATE_BSS if SPL
diff --git a/arch/arm/mach-nexell/Kconfig b/arch/arm/mach-nexell/Kconfig
index 16324e1..b43dd5a 100644
--- a/arch/arm/mach-nexell/Kconfig
+++ b/arch/arm/mach-nexell/Kconfig
@@ -4,7 +4,6 @@
 	bool "Nexell S5P4418 SoC"
 	select CPU_V7A
 	select OF_CONTROL
-	select OF_SEPARATE
 	select NX_GPIO
 	select DM_SERIAL
 	select PL01X_SERIAL
diff --git a/board/emulation/qemu-sbsa/Kconfig b/board/emulation/qemu-sbsa/Kconfig
index 728ceca..9ea6303 100644
--- a/board/emulation/qemu-sbsa/Kconfig
+++ b/board/emulation/qemu-sbsa/Kconfig
@@ -30,7 +30,6 @@
 	select HAS_ROM
 	select MTD
 	select OF_LIBFDT_OVERLAY
-	select OF_SEPARATE
 	select PCI
 	select PCIE_ECAM_GENERIC
 	select SYS_PCI_64BIT