arch/arm: restrict more armv8a cores to aarch64

Since gcc-8, falkor and qdf24xx have been available only as
AArch64. Indeed, according to upstream commit [1], the released HW has
never supported AArch32.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=96a411453d39e6583fa4d7008761a1977cdbe7fa

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[Thomas: improve commit log]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed