MIPS: don't explicitly select LIBFDT in Kconfig

It gets selected anyway through USE_OF -> OF_EARLY_FLATTREE ->
OF_FLATTREE -> LIBFDT, no need to double-check.
Signed-off-by: Alexander Lobakin <alobakin@dlink.ru>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
Cc: Will Deacon <will@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Allison Randal <allison@lohutok.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

arch/mips/Kconfig

@@ -111,7 +111,6 @@ config MIPS_GENERIC
 	select DMA_PERDEV_COHERENT
 	select HAVE_PCI
 	select IRQ_MIPS_CPU
-	select LIBFDT
 	select MIPS_AUTO_PFN_OFFSET
 	select MIPS_CPU_SCACHE
 	select MIPS_GIC
@@ -404,7 +403,6 @@ config MACH_INGENIC
 	select GENERIC_IRQ_CHIP
 	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
 	select USE_OF
-	select LIBFDT
 
 config LANTIQ
 	bool "Lantiq based platforms"
@@ -511,7 +509,6 @@ config MACH_PISTACHIO
 	select DMA_NONCOHERENT
 	select GPIOLIB
 	select IRQ_MIPS_CPU
-	select LIBFDT
 	select MFD_SYSCON
 	select MIPS_CPU_SCACHE
 	select MIPS_GIC
@@ -549,7 +546,6 @@ config MIPS_MALTA
 	select I8253
 	select I8259
 	select IRQ_MIPS_CPU
-	select LIBFDT
 	select MIPS_BONITO64
 	select MIPS_CPU_SCACHE
 	select MIPS_GIC
@@ -981,7 +977,6 @@ config CAVIUM_OCTEON_SOC
 	select ZONE_DMA32
 	select HOLES_IN_ZONE
 	select GPIOLIB
-	select LIBFDT
 	select USE_OF
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_SMP