clk: versatile: Rename ICST to CLK_ICST

For consistency, prefix the ICST config option with CLK as all other
clock source drivers have.

Signed-off-by: Jean Delvare <[e-mail]>
Cc: Linus Walleij <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Link: https://lore.kernel.org/r/20210901180833.4558932d@endymion
Signed-off-by: Stephen Boyd <[e-mail]>

arch/arm/mach-integrator/Kconfig

···
 	select CMA
 	select DMA_CMA
 	select HAVE_TCM
-	select ICST
+	select CLK_ICST
 	select MFD_SYSCON
 	select PLAT_VERSATILE
 	select POWER_RESET

arch/arm/mach-realview/Kconfig

···
 	select HAVE_ARM_TWD if SMP
 	select HAVE_PATA_PLATFORM
 	select HAVE_TCM
-	select ICST
+	select CLK_ICST
 	select MACH_REALVIEW_EB if ARCH_MULTI_V5
 	select MFD_SYSCON
 	select PLAT_VERSATILE

arch/arm/mach-versatile/Kconfig

···
 	select ARM_VIC
 	select CLKSRC_VERSATILE
 	select CPU_ARM926T
-	select ICST
+	select CLK_ICST
 	select MFD_SYSCON
 	select PLAT_VERSATILE
 	select POWER_RESET

arch/arm/mach-vexpress/Kconfig

···
 	select HAVE_ARM_SCU if SMP
 	select HAVE_ARM_TWD if SMP
 	select HAVE_PATA_PLATFORM
-	select ICST
+	select CLK_ICST
 	select NO_IOPORT_MAP
 	select PLAT_VERSATILE
 	select POWER_RESET

drivers/clk/versatile/Kconfig

···
 menu "Clock driver for ARM Reference designs"
 	depends on HAS_IOMEM
 
-config ICST
+config CLK_ICST
 	bool "Clock driver for ARM Reference designs ICST"
 	select REGMAP_MMIO
 	help

drivers/clk/versatile/Makefile

···
 # SPDX-License-Identifier: GPL-2.0-only
 # Makefile for Versatile-specific clocks
-obj-$(CONFIG_ICST)		+= icst.o clk-icst.o clk-versatile.o
+obj-$(CONFIG_CLK_ICST)		+= icst.o clk-icst.o clk-versatile.o
 obj-$(CONFIG_INTEGRATOR_IMPD1)	+= clk-impd1.o
 obj-$(CONFIG_CLK_SP810)		+= clk-sp810.o
 obj-$(CONFIG_CLK_VEXPRESS_OSC)	+= clk-vexpress-osc.o