irqchip: Place CONFIG_SIFIVE_PLIC into the menu

commit 0149385537e6d36f535fcd83cfcabf83a32f0836 upstream.

Somehow CONFIG_SIFIVE_PLIC ended up outside of the "IRQ chip support"
menu.

Fixes: 8237f8bc ("irqchip: add a SiFive PLIC driver")
Signed-off-by: NJonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Reviewed-by: NPalmer Dabbelt <palmer@sifive.com>
Acked-by: NPalmer Dabbelt <palmer@sifive.com>
Link: https://lore.kernel.org/r/20191002144452.10178-1-j.neuschaefer@gmx.netSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/irqchip/Kconfig

@@ -371,8 +371,6 @@ config QCOM_PDC
 	  Power Domain Controller driver to manage and configure wakeup
 	  IRQs for Qualcomm Technologies Inc (QTI) mobile chips.
 
-endmenu
-
 config SIFIVE_PLIC
 	bool "SiFive Platform-Level Interrupt Controller"
 	depends on RISCV
@@ -384,3 +382,5 @@ config SIFIVE_PLIC
 	   interrupt sources are subordinate to the PLIC.
 
 	   If you don't know what to do here, say Y.
+
+endmenu