dde_linux: Move symbolic header-file links of Intel driver

Because Linux sometimes uses relative includes, the links are moved to the
'include/include/include' directory.

Ref genodelabs#1764

repos/dde_linux/lib/import/import-intel_fb_include.mk

@@ -21,7 +21,7 @@ INC_DIR += $(SRC_DIR)/include \
            $(LX_CONTRIB_DIR)/drivers/gpu/include \
            $(LX_CONTRIB_DIR)/include \
            $(LX_CONTRIB_DIR)/include/uapi \
-           $(LIB_CACHE_DIR)/intel_fb_include
+           $(LIB_CACHE_DIR)/intel_fb_include/include/include/include
 
 CC_OPT += -U__linux__ -D__KERNEL__
 CC_OPT += -DCONFIG_DRM_I915_KMS -DCONFIG_I2C -DCONFIG_I2C_BOARDINFO

repos/dde_linux/lib/mk/intel_fb_include.mk

@@ -4,14 +4,25 @@
 # provides our emulation of the Linux kernel API.
 #
 
+ifeq ($(called_from_lib_mk),yes)
+
 LX_CONTRIB_DIR := $(call select_from_ports,dde_linux)/src/drivers/framebuffer/intel
 LX_EMUL_H      := $(REP_DIR)/src/drivers/framebuffer/intel/include/lx_emul.h
 
 GEN_INCLUDES := $(shell grep -rh "^\#include .*\/" $(LX_CONTRIB_DIR) |\
                         sed "s/^\#include [^<\"]*[<\"]\([^>\"]*\)[>\"].*/\1/" | sort | uniq)
 
+#
+# Put Linux headers in 'GEN_INC' dir, since some include use "../../" paths use
+# three level include hierarchy
+#
+GEN_INC         := $(shell pwd)/include/include/include
+GEN_INCLUDES    := $(addprefix $(GEN_INC)/,$(GEN_INCLUDES))
+
 all: $(GEN_INCLUDES)
 
 $(GEN_INCLUDES):
 	$(VERBOSE)mkdir -p $(dir $@)
 	$(VERBOSE)ln -sf $(LX_EMUL_H) $@
+
+endif