soong: Follow the correct JSON syntax

wrong: CROSS_COMPILE=\\"/data4...
correct: CROSS_COMPILE=\"/data4...

Change-Id: I5080aef7feb2ec7429cb9ba1f4baccefa61a3cd3
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
diff --git a/config/BoardConfigSoong.mk b/config/BoardConfigSoong.mk
index 9a1fc46..88b4821 100644
--- a/config/BoardConfigSoong.mk
+++ b/config/BoardConfigSoong.mk
@@ -21,7 +21,7 @@
 
 define addVar
   SOONG_CONFIG_blissVarsPlugin += $(1)
-  SOONG_CONFIG_blissVarsPlugin_$(1) := $$(subst ",\",$$($1))
+  SOONG_CONFIG_blissVarsPlugin_$(1) := $($1)
 endef
 
 $(foreach v,$(EXPORT_TO_SOONG),$(eval $(call addVar,$(v))))