xtensa: fix 'make debug' for xt-sim targets

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
diff --git a/scripts/Makefile.toolchain.xcc b/scripts/Makefile.toolchain.xcc
index 193d761..c9f756d 100644
--- a/scripts/Makefile.toolchain.xcc
+++ b/scripts/Makefile.toolchain.xcc
@@ -112,6 +112,6 @@
 XTRUN = ${CROSS_COMPILE}run
 XTRUN_FLAGS += --turbo --cc_none
 
-export CROSS_COMPILE XTENSA_SYSTEM LIB_INCLUDE_DIR
+export CROSS_COMPILE XTENSA_SYSTEM LIB_INCLUDE_DIR XCC_TOOLS
 endif # CONFIG_XTENSA
 
diff --git a/scripts/support/xt-gdb.sh b/scripts/support/xt-gdb.sh
old mode 100644
new mode 100755
index ab78eb1..edd8f0f
--- a/scripts/support/xt-gdb.sh
+++ b/scripts/support/xt-gdb.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-XT_GDB=$XTENSA_TOOLS_PATH/bin/xt-gdb
+XT_GDB=$XCC_TOOLS/bin/xt-gdb
 ELF_NAME=${O}/${KERNEL_ELF_NAME}
 
 set -e