[ARM] arm32: Don't access FPSID before enabling CP10 & CP11 in CPACR

Currently, cpu_init() function used cpu_supports_fpu() before enabling
CP10 & CP11 in CPACR. This is architecturally wrong and does not work
on real HW becasue cpu_supports_fpu() reads FPSID which can only be
accessed if CP10 & CP10 is enabled in CPACR.

This patch fixes above described issue for arm32 port.

Signed-off-by: Anup Patel <anup@brainfault.org>