mediatek: fix wrong compatible string #116

Job	Run time
Build all core packages for selected target / Determine Changed Files / Determine Changed Files	6s
Build all core packages for selected target / Determine Changed Packages / Determine Changed Packages	4s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Set up build x86/64	5s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Set up build malta/be	9s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Build x86/64	45m 2s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Check packages for x86/64	3m 20s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Build malta/be	45m 17s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Check packages for malta/be	3m 51s
Build all core packages for selected target / Upload ccache cache to s3	0s
	1h 37m 54s

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