ar71xx: Add profile and build image for TP-Link MR12U v1

This patch adds corrected profile and build image for the TL-MR12U board.

Unfortunately i cannot test the factory image since i can't find anywhere
the original chinese firmware but
the generated openwrt-ar71xx-generic-tl-mr12u-v1-squashfs-sysupgrade.bin
worked just fine over a modified mr3040 factory image i managed to modify
to initially flash the mr12u from the original firmware.

Proper kernel support probably should be added since cat /proc/cpuinfo shows
MR13U.

Signed-off-by: Daniel Petre <daniel.petre@gmail.com>

SVN-Revision: 44427

target/linux/ar71xx/generic/profiles/tp-link.mk

@@ -48,6 +48,16 @@ define Profile/TLMR11U/Description
 endef
 $(eval $(call Profile,TLMR11U))
 
+define Profile/TLMR12U
+	NAME:=TP-LINK TL-MR12U
+	PACKAGES:=kmod-usb-core kmod-usb2 kmod-ledtrig-usbdev
+endef
+
+define Profile/TLMR12U/Description
+	Package set optimized for the TP-LINK TL-MR12U.
+endef
+
+$(eval $(call Profile,TLMR12U))
 
 define Profile/TLMR13U
 	NAME:=TP-LINK TL-MR13U

target/linux/ar71xx/image/Makefile

@@ -1386,6 +1386,7 @@ $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,MAC1200R,mc-mac1200r,MC-MAC1200R,
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR10U,tl-mr10u-v1,TL-MR10U,ttyATH0,115200,0x00100101,1,4Mlzma))
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR11UV1,tl-mr11u-v1,TL-MR11U,ttyATH0,115200,0x00110101,1,4Mlzma))
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR11UV2,tl-mr11u-v2,TL-MR11U,ttyATH0,115200,0x00110102,1,4Mlzma))
+$(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR12U,tl-mr12u-v1,TL-MR13U,ttyATH0,115200,0x00120101,1,4Mlzma))
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR13U,tl-mr13u-v1,TL-MR13U,ttyATH0,115200,0x00130101,1,4Mlzma))
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR3020,tl-mr3020-v1,TL-MR3020,ttyATH0,115200,0x30200001,1,4Mlzma))
 $(eval $(call SingleProfile,TPLINK-LZMA,64kraw,TLMR3040V1,tl-mr3040-v1,TL-MR3040,ttyATH0,115200,0x30400001,1,4Mlzma))