thermal/ti-soc-thermal: Fix kernel-doc

Fix function name in ti-bandgap.c kernel-doc comment
to remove a warning.

drivers/thermal/ti-soc-thermal/ti-bandgap.c:787: warning: expecting
prototype for ti_bandgap_alert_init(). Prototype was for
ti_bandgap_talert_init() instead.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1621851963-36548-1-git-send-email-yang.lee@linux.alibaba.com