arm/scp-firmware: Fix build location

The build location is dependent on whether
debug or release version of scp is being built.

Change-Id: I22e0777c316ea59a49a6f178d620a59d24372e00
Signed-off-by: Usama Arif <usama.arif@arm.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>

meta-arm/recipes-bsp/scp-firmware/scp-firmware_2.6.0.bb

@@ -58,7 +58,7 @@ do_install() {
      install -d ${D}/firmware
      for FW in ${FW_TARGETS}; do
         for TYPE in ${FW_INSTALL}; do
-           install -D "${B}/product/${SCP_PLATFORM}/${FW}_${TYPE}/release/bin/${FW}_${TYPE}.bin" "${D}/firmware/"
+           install -D "${B}/product/${SCP_PLATFORM}/${FW}_${TYPE}/${SCP_BUILD_STR}/bin/${FW}_${TYPE}.bin" "${D}/firmware/"
         done
      done
 }