irqchip/ls-scfg-msi: Simplify Kconfig dependencies

Having both PCI_MSI and PCI is redundant. Drop PCI.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
[maz: cut commit message extra verbosity]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230111100554.24500-1-lukas.bulwahn@gmail.com

drivers/irqchip/Kconfig

@@ -389,7 +389,7 @@ config LS_EXTIRQ
 
 config LS_SCFG_MSI
 	def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
-	depends on PCI && PCI_MSI
+	depends on PCI_MSI
 
 config PARTITION_PERCPU
 	bool