yam: use request_firmware

Added predef variable in add_mcs() to support predefined mcs data

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
diff --git a/firmware/Makefile b/firmware/Makefile
index c6af61b..fc7d427 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -91,6 +91,7 @@
 fw-shipped-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda/xircom_pgs.fw
 fw-shipped-$(CONFIG_USB_VICAM) += vicam/firmware.fw
 fw-shipped-$(CONFIG_VIDEO_CPIA2) += cpia2/stv0672_vp4.bin
+fw-shipped-$(CONFIG_YAM) += yam/1200.bin yam/9600.bin
 
 fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-)