pch: Rename PCH_SUPPORT to PCH

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/apollolake/Kconfig b/arch/x86/cpu/apollolake/Kconfig
index b3ce053..b710a65 100644
--- a/arch/x86/cpu/apollolake/Kconfig
+++ b/arch/x86/cpu/apollolake/Kconfig
@@ -12,10 +12,10 @@
 	select INTEL_SOC
 	select INTEL_PMC
 	select TPL_X86_TSC_TIMER_NATIVE
-	select SPL_PCH_SUPPORT
-	select TPL_PCH_SUPPORT
+	select SPL_PCH
+	select TPL_PCH
 	select PCIEX_LENGTH_256MB
-	select PCH_SUPPORT
+	select PCH
 	select P2SB
 	select SMP_AP_WORK
 	select INTEL_GMA_SWSMISCI