add esp-dsp

Makefile

@@ -13,5 +13,6 @@
 #recovery: CPPFLAGS+=-DRECOVERY_APPLICATION=1
 
 PROJECT_NAME?=squeezelite
+EXTRA_COMPONENT_DIRS := $(PROJECT_PATH)/esp-dsp
 include $(IDF_PATH)/make/project.mk 
-CPPFLAGS+= -Wno-error=maybe-uninitialized
+CPPFLAGS+= -Wno-error=maybe-uninitialized

Makefile_std.mk

@@ -1,2 +1,3 @@
 PROJECT_NAME?= squeezelite
+EXTRA_COMPONENT_DIRS := $(PROJECT_PATH)/esp-dsp
 include $(IDF_PATH)/make/project.mk