kernel: add support for GD25D05 SPI NOR (5.4)

kernel: add support for GD25D05 SPI NOR (5.4)

This chip is used on newer RB912UAG-5HPnD r2 and 922UAGS-5HPacD boards:

Before:

[    0.824562] spi-nor spi0.0: unrecognized JEDEC id bytes: c8 40 10 c8 40 10
[    0.831607] spi-nor: probe of spi0.0 failed with error -2

After:

[    0.825347] spi-nor spi0.0: gd25d05 (64 Kbytes)
[    0.830291] 1 routerbootpart partitions found on MTD device spi0.0
[    0.836577] Creating 1 MTD partitions on "spi0.0":
[    0.841448] 0x000000000000-0x000000010000 : "partitions"
[    0.848418] 4 routerbootpart partitions found on MTD device partitions
[    0.855092] Creating 4 MTD partitions on "partitions":
[    0.860318] 0x000000000000-0x00000000c000 : "routerboot"
[    0.866548] 0x00000000c000-0x00000000d000 : "hard_config"
[    0.872832] 0x00000000d000-0x00000000e000 : "bios"
[    0.878580] 0x00000000e000-0x00000000f000 : "soft_config"

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>