soc/intel/icelake: Make use of "all-y"

This patch makes use of "all-y" in order to replace all common stage (bootblock, verstage,
romstage, postcar, ramstage) files inclusion in Makefile.inc

Change-Id: I11001d0d381ec9c1df41bc331da845f51e666a44
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36546
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/icelake/Makefile.inc

@@ -8,29 +8,26 @@ subdirs-y += ../../../cpu/x86/mtrr
 subdirs-y += ../../../cpu/x86/smm
 subdirs-y += ../../../cpu/x86/tsc
 
+# all (bootblock, verstage, romstage, postcar, ramstage)
+all-y += gspi.c
+all-y += i2c.c
+all-y += pmutil.c
+all-y += spi.c
+all-y += uart.c
+
 bootblock-y += bootblock/bootblock.c
 bootblock-y += bootblock/cpu.c
 bootblock-y += bootblock/pch.c
-bootblock-y += pmutil.c
 bootblock-y += bootblock/report_platform.c
 bootblock-y += espi.c
 bootblock-y += gpio.c
-bootblock-y += gspi.c
-bootblock-y += i2c.c
 bootblock-y += memmap.c
-bootblock-y += spi.c
 bootblock-y += p2sb.c
-bootblock-y += uart.c
 
 romstage-y += espi.c
 romstage-y += gpio.c
-romstage-y += gspi.c
-romstage-y += i2c.c
 romstage-y += memmap.c
-romstage-y += pmutil.c
 romstage-y += reset.c
-romstage-y += spi.c
-romstage-y += uart.c
 
 ramstage-y += acpi.c
 ramstage-y += chip.c
@@ -41,18 +38,13 @@ ramstage-y += finalize.c
 ramstage-y += fsp_params.c
 ramstage-y += gpio.c
 ramstage-y += graphics.c
-ramstage-y += gspi.c
-ramstage-y += i2c.c
 ramstage-y += lockdown.c
 ramstage-y += memmap.c
 ramstage-y += p2sb.c
 ramstage-y += pmc.c
-ramstage-y += pmutil.c
 ramstage-y += reset.c
 ramstage-y += smmrelocate.c
-ramstage-y += spi.c
 ramstage-y += systemagent.c
-ramstage-y += uart.c
 ramstage-y += sd.c
 
 smm-y += gpio.c
@@ -63,17 +55,6 @@ smm-y += smihandler.c
 smm-y += uart.c
 
 postcar-y += memmap.c
-postcar-y += pmutil.c
-postcar-y += i2c.c
-postcar-y += gspi.c
-postcar-y += spi.c
-postcar-y += uart.c
-
-verstage-y += gspi.c
-verstage-y += i2c.c
-verstage-y += pmutil.c
-verstage-y += spi.c
-verstage-y += uart.c
 
 CPPFLAGS_common += -I$(src)/soc/intel/icelake
 CPPFLAGS_common += -I$(src)/soc/intel/icelake/include