Update TrappedFP annotation for ESR_EL1

[berkus]

Also only available for FEAT_AA32.

Originally posted by @thejpster in #60 (comment)

[kisum9]

@berkus Also found in the documentation ESR_EL1 that the EC field has removed HVC64:0b01_0110 and SMC64:0b01_0111, which may need to be deleted?