Simplify patchram script

recipes-android/brcm-patchram-plus/brcm-patchram-plus/patchram.service

 [Unit]
-Description=Load firmware into BCM20715A1 bluetooth chip
-After=dev-ttyHS99.device
+Description=Load firmware into broadcom bluetooth chip
 
 [Service]
 Type=simple
-ExecStart=/usr/bin/patchram.sh
+ExecStart=/bin/echo This script should be device specific
 
 [Install]
 WantedBy=basic.target

recipes-android/brcm-patchram-plus/brcm-patchram-plus/patchram.sh

-#!/bin/bash
-
-echo This script should be device specific

recipes-android/brcm-patchram-plus/brcm-patchram-plus_git.bbappend

 FILESEXTRAPATHS_prepend := "${THISDIR}/brcm-patchram-plus:"
-SRC_URI += "file://patchram.service \
-            file://patchram.sh"
+SRC_URI += "file://patchram.service"
 LICENSE = "BSD"
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
@@ -9,11 +8,7 @@ do_install_append() {
     install -d ${D}/lib/systemd/system/multi-user.target.wants/
     cp ${WORKDIR}/patchram.service ${D}/lib/systemd/system/
     ln -s ../patchram.service ${D}/lib/systemd/system/multi-user.target.wants/patchram.service
-
-    install -d ${D}/usr/bin/
-    cp ${WORKDIR}/patchram.sh ${D}/usr/bin/
-    chmod +x ${D}/usr/bin/patchram.sh
 }
 
 FILES_${PN} += "/lib/systemd/system/"
-RDEPENDS_${PN} += "rfkill bash"
+RDEPENDS_${PN} += "rfkill"