irqchip: Some Kconfig cleanup for C-SKY

Fixes to Kconfig help text:

- spell out "hardware"
- fix verb usage

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/d44baeee-cceb-7c02-7249-e6b4817f0847@infradead.org

drivers/irqchip/Kconfig

@@ -438,7 +438,7 @@ config CSKY_MPINTC
 	help
 	  Say yes here to enable C-SKY SMP interrupt controller driver used
 	  for C-SKY SMP system.
-	  In fact it's not mmio map in hw and it use ld/st to visit the
+	  In fact it's not mmio map in hardware and it uses ld/st to visit the
 	  controller's register inside CPU.
 
 config CSKY_APB_INTC
@@ -446,7 +446,7 @@ config CSKY_APB_INTC
 	depends on CSKY
 	help
 	  Say yes here to enable C-SKY APB interrupt controller driver used
-	  by C-SKY single core SOC system. It use mmio map apb-bus to visit
+	  by C-SKY single core SOC system. It uses mmio map apb-bus to visit
 	  the controller's register.
 
 config IMX_IRQSTEER