[U-Boot] arm: Do not clear LR on exception in SPL

[Tom Rini]

On Mon, Jun 11, 2018 at 02:04:17PM -0500, Andrew F. Davis wrote:

> When an exception or interrupt occurs the link register (LR) may
> contain the source of the exception, although we do not print the
> value it may still be extracted with a debugger. When in SPL we
> loop on getting and exception, but use a linking branch, which
> over-writes the LR value, use a regular branch instruction here.
> 
> Signed-off-by: Andrew F. Davis <afd at ti.com>

Applied to u-boot/master, thanks!

-- 
Tom
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