irqchip/loongson-htpic: Remove unneeded select of I8259

LOONGSON_HTPIC depends on MACH_LOONGSON64 and MACH_LOONGSON64 already
selects I8259 in arch/mips/Kconfig, so no need to select I8259 again
when config LOONGSON_HTPIC.

Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: seehearfeel

drivers/irqchip/Kconfig

@@ -541,7 +541,6 @@ config LOONGSON_HTPIC
 	default y
 	select IRQ_DOMAIN
 	select GENERIC_IRQ_CHIP
-	select I8259
 	help
 	  Support for the Loongson-3 HyperTransport PIC Controller.