Fix typo in ROM name

Hi!

In commit 791249f2, the following ROM files are renamed:

u33.bin -> cave_cv-02_u33.u33
u49.bin -> cave_cv-02_u49.u49
u4.bin -> came_cv-02_u4.u4

I'm guessing that "came_cv-02_u4.u4" is a typo, and should be "cave_cv-02_u4.u4" instead.  If that's the case, then my patch 4be407a3 should fix that.  If it isn't, my apologies for intruding.

All the best,
Zoë.