ARM32: Improve register dump in hs_err

Noticed that ARM32 hs_errs are formatted weirdly, there is a newline after register value, and it prints the register value twice.

See:

Register to memory mapping:

  r0 = 0xb6b54430
0xb6b54430: <offset 0x00e69430> in /jdk/lib/server/libjvm.so at 0xb5ceb000

  r1 = 0x00000501
0x00000501 is an unknown value

  r2 = 0xb6b54ef8
0xb6b54ef8: <offset 0x00e69ef8> in /jdk/lib/server/libjvm.so at 0xb5ceb000

  r3 = 0xb6b54eb4
0xb6b54eb4: <offset 0x00e69eb4> in /jdk/lib/server/libjvm.so at 0xb5ceb000

  r4 = 0xb6f54000
0xb6f54000 points into unknown readable memory: 0x00000058 | 58 00 00 00