cpu/intel/fsp_model_206ax: change realpath to readlink

realpath and readlink can be used to do the same thing - in this case
we're turning path1/path2/../path3/path4 into path1/path3/path4 so
that the makefile's wildcard routine can evaluate it.

Debian derivatives don't seem to include realpath. (and even when it's
installed, it's not the gnu coreutils version.)

Change-Id: I0a80a1d9b563810bdf96aea9d5de79ce1cea457a
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: http://review.coreboot.org/5793
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Tested-by: build bot (Jenkins)
diff --git a/src/cpu/intel/fsp_model_206ax/Makefile.inc b/src/cpu/intel/fsp_model_206ax/Makefile.inc
index c6d7339..cb7f2a8 100644
--- a/src/cpu/intel/fsp_model_206ax/Makefile.inc
+++ b/src/cpu/intel/fsp_model_206ax/Makefile.inc
@@ -8,7 +8,7 @@
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE)  += microcode_blob.c
 
 ifneq ($(CONFIG_MICROCODE_INCLUDE_PATH),)
-ifneq ($(wildcard $(shell realpath -L "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")),)
+ifneq ($(wildcard $(shell readlink -f "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")),)
 CPPFLAGS_common += -I$(CONFIG_MICROCODE_INCLUDE_PATH)
 endif
 endif
diff --git a/src/soc/intel/fsp_baytrail/microcode/Makefile.inc b/src/soc/intel/fsp_baytrail/microcode/Makefile.inc
index 012c712..f6ee135 100644
--- a/src/soc/intel/fsp_baytrail/microcode/Makefile.inc
+++ b/src/soc/intel/fsp_baytrail/microcode/Makefile.inc
@@ -19,7 +19,7 @@
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE) += microcode_blob.c
 
 ifneq ($(CONFIG_MICROCODE_INCLUDE_PATH),)
-ifneq ($(wildcard $(shell realpath -q -L "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")),)
+ifneq ($(wildcard $(shell readlink -f "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")),)
 CPPFLAGS_common += -I$(CONFIG_MICROCODE_INCLUDE_PATH)
 endif
 endif