mtd: add arch dependency for MTD_BCM47XXSFLASH symbol

[Kalle Valo]

Rafał Miłecki wrote:
> We dropped strict MIPS dependency for bcm47xxsflash driver in:
> commit 5651d6aaf489 ("mtd: bcm47xxsflash: use ioremap_cache() instead of
> KSEG0ADDR()") but using ioremap_cache still limits building it to few
> selected architectures only.
> 
> A recent commit 57d8f7dd2132 ("bcma: allow enabling serial flash support
> on non-MIPS SoCs") automatically dropped MIPS dependency for
> MTD_BCM47XXSFLASH which broke building e.g. on powerpc and cris.
> 
> The bcma change is alright as it doesn't break building bcma code in any
> way. MTD_BCM47XXSFLASH on the other hand should be limited to archs
> which need it and can build it (by providing ioremap_cache).
> 
> Fixes: 57d8f7dd2132 ("bcma: allow enabling serial flash support on non-MIPS SoCs")
> Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
> Cc: Brian Norris <computersforpeace at gmail.com>
> Acked-by: Brian Norris <computersforpeace at gmail.com>

Thanks, 1 patch applied to wireless-drivers-next.git:

efacc699139e mtd: add arch dependency for MTD_BCM47XXSFLASH symbol

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https://patchwork.kernel.org/patch/9236053/