ARM: hw_breakpoint: reduce the number of WARN_ONCE invocations

The ARM hw_breakpoint backend is currently a bit too noisy when things
start to go awry.

This patch removes a couple of over-zealous WARN_ONCE invocations and
replaces then with pr_warnings instead.

Signed-off-by: Will Deacon <will.deacon@arm.com>
1 file changed