linux-headers: Exclude all .cmd files

These are not needed for building OOT modules and their contents may
vary depending on whether /bin/sh is bash.

debian/changelog

@@ -24,6 +24,7 @@ linux (4.7.2-1) UNRELEASED; urgency=medium
   * usbip: Use the locally-installed <linux/usbip.h>
   * Exclude redundant and unreproducible files from binary packages
     - usbip: Put all autotools-generated files in the build directory
+    - linux-headers: Exclude all .cmd files
 
   [ Martin Michlmayr ]
   * [armhf] Enable MMC_SDHCI_IPROC and HW_RANDOM_BCM2835 for BCM2835.

debian/rules.real

@@ -299,6 +299,7 @@ install-headers_$(ARCH)_$(FEATURESET)_$(FLAVOUR): $(STAMPS_DIR)/build_$(ARCH)_$(
 	cp -a $(SOURCE_DIR)/{.config,.kernel*,Module.symvers,include} $(DIR)
 	cp -a $(SOURCE_DIR)/arch/$(KERNEL_ARCH)/include $(DIR)/arch/$(KERNEL_ARCH)
 	cp -a $(SOURCE_DIR)/arch/$(KERNEL_ARCH)/kernel/asm-offsets.s $(DIR)/arch/$(KERNEL_ARCH)/kernel
+	find $(DIR) -name '*.cmd' -delete
 
 	if [ -f $(SOURCE_DIR)/arch/$(KERNEL_ARCH)/lib/crtsavres.o ]; then \
 		mkdir $(DIR)/arch/$(KERNEL_ARCH)/lib; \