ark: enable wifi on aarch64

Tested: tested in an ARM64 system with Intel AX200 installed. ARK boots, the card is recognized and I can connect to a WiFi network and pass traffic.

Enable wireless core and drivers for aarch64 in RHEL, needed for a lot of Edge hardware. We're enabling the same options and drivers that are enabled for x86_64, which was the only architecture where wifi was supported.

CONFIG_MAC80211_DEBUGFS and CONFIG_MAC80211_RC_DEFAULT had values in rhel/generic that were unused, being overwritten in x86. The values to be used for all arches, both for RHEL and Fedora, are the same, so moving them to common/generic.

Comparing what CONFIGs are enabled by default with CONFIG_WIRELESS and CONFIG_WLAN in x86_64 and aarch64, there are 2 CONFIGs that are aarch64 specific, and we can set them to "not set" for the moment: CONFIG_ATH10K_AHB <- configured to "not set" here CONFIG_PWRSEQ_SD8787 <- it was already configured to "not set"

Suggested-by: Peter Robinson pbrobinson@redhat.com Signed-off-by: Íñigo Huguet ihuguet@redhat.com