linux-6.1.y: request for picking 085679b15b5a ("mtd: parsers: refer to ARCH_BCMBCA instead of ARCH_BCM4908")

Hi,

In linux-6.1.y we don't have ARCH_BCM4908 symbol anymore (see commit dd5c672d7ca9 ("arm64: bcmbca: Merge ARCH_BCM4908 to ARCH_BCMBCA") but drivers/mtd/parsers/Kconfig still references it.

Please kindly cherry-pick a fix for that: commit 085679b15b5a ("mtd: parsers: refer to ARCH_BCMBCA instead of ARCH_BCM4908") - it's part of v6.2.