brcm63xx: move MAGIC to dts

target/linux/brcm63xx/base-files/lib/brcm63xx.sh

target/linux/brcm63xx/dts/magic.dts

target/linux/brcm63xx/image/Makefile

target/linux/brcm63xx/patches-3.14/507-board-MAGIC.patch

target/linux/brcm63xx/patches-3.14/508-board_hw553.patch

...t/linux/brcm63xx/patches-3.14/509-board_rta1320_16m.patch

target/linux/brcm63xx/patches-3.14/510-board_spw303v.patch

target/linux/brcm63xx/patches-3.14/511-board_V2500V.patch

target/linux/brcm63xx/patches-3.14/512-board_BTV2110.patch

.../linux/brcm63xx/patches-3.14/514-board_ct536_ct5621.patch

.../linux/brcm63xx/patches-3.14/515-board_DWV-S0_fixes.patch

...et/linux/brcm63xx/patches-3.14/516-board_96348A-122.patch

...t/linux/brcm63xx/patches-3.14/519_board_CPVA502plus.patch

...es-3.14/520-bcm63xx-add-support-for-96368MVWG-board.patch

...s-3.14/521-bcm63xx-add-support-for-96368MVNgr-board.patch

...3.14/523-MIPS-BCM63XX-add-963281TAN-reference-board.patch

...nux/brcm63xx/patches-3.14/524-board_dsl_274xb_rev_f.patch

target/linux/brcm63xx/patches-3.14/525-board_96348w3.patch

target/linux/brcm63xx/patches-3.14/526-board_CT6373-1.patch

...ux/brcm63xx/patches-3.14/527-board_dva-g3810bn-tl-1.patch