libpayload/tests: remove tests/include/mocks include path

Some files in tests/include/mocks might have the same name as main
libpayload include files. Remove this path from default includes to
force addition of mocks/ prefix in include paths. This will help
avoiding name clashes and will also make mock headers visible.

Change-Id: I4baa07472f0379d56423cf7152b1ecc9a4824539
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
diff --git a/payloads/libpayload/tests/Makefile.inc b/payloads/libpayload/tests/Makefile.inc
index 9ae8442..e4babb1 100644
--- a/payloads/libpayload/tests/Makefile.inc
+++ b/payloads/libpayload/tests/Makefile.inc
@@ -37,7 +37,7 @@
 TEST_CFLAGS += -I$(dir $(TEST_KCONFIG_AUTOHEADER))
 
 # Test specific includes
-TEST_CFLAGS += -I$(testsrc)/include -I$(testsrc)/include/mocks
+TEST_CFLAGS += -I$(testsrc)/include
 TEST_CFLAGS += -I$(cmockasrc)/include
 
 # Minimal subset of warnings and errors. Tests can be less strict than actual build.