ath79: take over the space for user data on Linksys EA4500 v3 #35

Job	Run time
Build all core packages for selected target / Determine Changed Files / Determine Changed Files	12s
Build all core packages for selected target / Determine Changed Packages / Determine Changed Packages	5s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Setup build x86/64	10s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Setup build malta/be	7s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Check packages for malta/be	4m 4s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Build malta/be	44m 53s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Check packages for x86/64	3m 59s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Build x86/64	41m 49s
Build all core packages for selected target / Upload ccache cache to s3	0s
	1h 35m 19s

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