Fix RDRAM initialization

[Rosalie241]

This patch does the following:

1. It changes the corrupt handler's toggle by checking all modules its CC value
2. It fixes the idfield_value function which incorrectly captured the 16-24th bits instead of the 8-16th bits
3. It only captures the first 15 bits instead of the full 16 bits for comparison
4. It adds support for the swapfield value of the AddressSelect register
5. It adds a bounds check to read_rdram_dram_corrupted for the dram address like read_rdram_dram has
6. It fixes the mapping.end value in map_corrupt_rdram to match the one in device.c

This patch allows the libdragon IPL to boot without using hacks like setting the RI_SELECT register to a nonzero value or checking which register is targeted by a broadcast.

I want to thank @rasky for helping me debug some issues.

You can test this code using a simple n64-systemtest build with the libdragon IPL which only runs 1 test: n64-systemtest.zip

You can view the documentation here:

• https://n64brew.dev/wiki/RDRAM_Interface#Memory_addressing
• https://n64brew.dev/wiki/RDRAM#RDRAM_addressing